

The Sentinel (2023)
Artur Rezende · September 19, 2023 · Casual, Strategy, Auto Battler, Tower Defense, Roguelike
Buy The Sentinel from Steam at $0.99 — the cheapest of 1 store we compare.
Where to buy The Sentinel — official stores
The Sentinel price by region
The Sentinel costs $0.45 in Georgia (USD), £0.89 in the United Kingdom, $0.99 in the United States, €0.99 in Europe (EUR), CA$1.29 in Canada, NZ$1.49 in New Zealand, A$1.50 in Australia, R$3.49 in Brazil and zł4.49 in Poland right now.
| Region | Best price | Official store | Key shop | Stores |
|---|---|---|---|---|
| $0.45 −50% | $0.45 | — | 1 | |
| £0.89 | £0.89 | — | 1 | |
| $0.99 | $0.99 | — | 1 | |
| €0.99 | €0.99 | — | 1 | |
| CA$1.29 | CA$1.29 | — | 1 | |
| NZ$1.49 | NZ$1.49 | — | 1 | |
| A$1.50 | A$1.50 | — | 1 | |
| R$3.49 | R$3.49 | — | 1 | |
| zł4.49 | zł4.49 | — | 1 |
Each row is a real price from that region's own stores, not a currency conversion, so the figures are not directly comparable. Switch regions in the header to shop the one you buy in.
Screenshots
About The Sentinel
The action kicks off with a simple cannon, a loyal guardian that stands ready to defend your castle against the forces of darkness. Face initial waves of enemies, each more ruthless than the last. But make no mistake, your journey is merely beginning. As time progresses, new horizons unfold with a vast array of upgrades at your disposal. Hone your weapons, unlock powerful abilities, and deploy defense mechanisms to repel the invaders.
The true key to victory in 'The Sentinel' lies in strategy. Choose wisely which upgrades to apply and when to do so. Do you prefer reinforcing your defenses to withstand a massive assault, or opting for precise attacks to eliminate the most dangerous foes before they draw near? The decision is yours and will shape the fate of your castle.
Don't allow your castle to fall into the hands of the enemies! Join the battle in 'The Sentinel' and prove yourself as a strategist. Command your defenses, enhance your weaponry, and safeguard your kingdom with courage and intelligence. Adventure awaits, victory beckons - are you prepared to face the challenge?
About the gameplay.
The game begins with the player choosing one of the 20 available upgrades. Shortly after, the game starts, and the player controls a small cannon positioned at the top of the castle using the keyboard arrows. This cannon continuously fires spheres that fall due to gravity. These spheres collide with various balloons rising on the screen. Each balloon has a number indicating how many hits it needs to burst. When a balloon reaches a certain height on the screen, the value marked on it is subtracted from the player's cannon life. There is a bar at the bottom of the screen that fills over time.
Every time the bar is fully charged, the player can choose another upgrade. The game ends when the cannon's life count reaches zero, or when the player survives against waves of enemies for 15 minutes. Additionally, there's an upgrade system where the more points the player accumulates during matches, the more upgrades they can choose at the beginning of the game, starting with 1 and going up to a maximum of 10.
The Sentinel — game info
- Platforms
- Windows
- Player modes
- Single-player
- PC Game Pass
- Not included
What Steam players say
Recent verbatim reviews from Steam — separate from playze.io community reviews below.
The Sentinel is a simple but engaging tower defense game where players defend a castle from balloon invaders using a bouncing cannonball cannon and acquired upgrades. Most players enjoy the satisfying mechanics and arcade-style gameplay, though some report hitting a difficulty wall in the later stages that feels impossible without extensive upgrades, suggesting the game's balance may need adjustment for late-game progression.
⣿⣿⡻⠿⣳⠸⢿⡇⢇⣿⡧⢹⠿⣿⣿⣿⣿⣾⣿⡇⣿⣿⣿⣿⡿⡐⣯⠁ ⠄⠄ ⠟⣛⣽⡳⠼⠄⠈⣷⡾⣥⣱⠃⠣⣿⣿⣿⣯⣭⠽⡇⣿⣿⣿⣿⣟⢢⠏⠄ ⠄ ⢠⡿⠶⣮⣝⣿⠄⠄⠈⡥⢭⣥⠅⢌⣽⣿⣻⢶⣭⡿⠿⠜⢿⣿⣿⡿⠁⠄⠄ ⠄⣼⣧⠤⢌⣭⡇⠄⠄⠄⠭⠭⠭⠯⠴⣚⣉⣛⡢⠭⠵⢶⣾⣦⡍⠁⠄⠄⠄⠄ ⠄⣿⣷⣯⣭⡷⠄⠄⢀⣀⠩⠍⢉⣛⣛⠫⢏⣈⣭⣥⣶⣶⣦⣭⣛⠄⠄⠄⠄⠄ ⢀⣿⣿⣿⡿⠃⢀⣴⣿⣿⣿⣎⢩⠌⣡⣶⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣆⠄⠄⠄ ⢸⡿⢟⣽⠎⣰⣿⣿⣿⣿⣿⣿⢀⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣦⠄⠄ ⣰⠯⣾⢅⣼⣿⣿⣿⣿⣿⣿⡇⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡄⠄ ⢰⣄⡉⣼⣿⣿⣿⣿⣿⣿⣿⢸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣧⠄ ⢯⣌⢹⣿⣿⣿⣿⣿⣿⣿⣿⢸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠄ ⢸⣇⣽⣿⣿⣿⣿⣿⣿⣿⣿⠸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠄ ⢸⣟⣧⡻⣿⣿⣿⣿⣿⣿⣿⣧⡻⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠄ ⠈⢹⡧⣿⣸⠿⢿⣿⣿⣿⣿⡿⠗⣈⠻⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇⠄ ⠄⠘⢷⡳⣾⣷⣶⣶⣶⣶⣶⣾⣿⣿⢀⣶⣶⣶⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⠇⠄ ⠄⠄⠈⣵⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⢸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠄⠄ ⠄⠄⠄⠸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠘⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠇⠄⠄3 found this helpful
Really fun until you realize there's no way to win without cheating. The game needs more upgrades/modifiers, because the last 6-7 minutes cannot be completed with what you're given.2 found this helpful
This game surprised me, it is simple but i had a lot of fun!2 found this helpful
A neat little defense game about fending off invaders ascending up the walls of your castle in balloons, with your primary weapons being cannonballs that bounce satisfyingly between them, and off flat surfaces, to inflict the required number of hits to destroy these enemies. Helped along by flying axes, flaming stars, and windmilling swords. And eventually, by lightning strikes, shields, and skulls that float upward to be captured by the player's cannon to wipe out the enemies onscreen. All of these things are acquired as upgrades along the way, by surviving long enough for the meter to fill up and the upgrade menu to appear. As the player survives longer and longer per run, accumulating score, a growing number of upgrades will be available right at the start of a new run. This caps at 10 initial upgrade points, so it's not possible to brute force a successful run using every upgrade in the game. But these bonus upgrades help a lot. One thing to note is that the "quick upgrade" option, which speeds up the player's progression, ultimately increases the challenge of surviving, as each upgrade increases the health of the enemy balloons. So taking "quick upgrade" is good for scoring …1 found this helpful
Cannons + Balloons = The Sentinel.....Nice Tower Defense.1 found this helpful
Who knew defending a castle from numbered balloons could be so entertaining? The gravity-based cannon and upgrade choices make surviving those 15 minutes an interesting little challenge. A neat arcade-style tower defense game with a simple but enjoyable concept.
Community reviews
0 reviews
Sign in to write a review.
No reviews yet. Be the first to review this game.
More like The Sentinel
News
PCGames like Undertale that remember what you did
Undertale's own listing calls it the RPG where you don't have to destroy anyone. Games like Undertale that keep that idea: permanent choices, fights you can talk past, worlds that notice.
Nov 14, 2026
PCGames like Slay the Spire that keep the branching climb
Most games like Slay the Spire copy the cards and lose the map. These keep the risky-or-safe choice, from a three-floor train to a deck made of poker hands.
Nov 14, 2026
PCBodycam game price: what the zombie update changes about buying
The Dead & Damned put Bodycam's zombies back on 13 November. What our dated record says about the Bodycam game price, and why the store's end date matters more than the sticker.
Nov 14, 2026
BlogSilkMU is our new partner: MU Online Season 6 in a browser tab
SilkMU, a MU Online Season 6 server that runs in a browser tab or as an app, opened on 6 November 2026 and is now our partner. What it offers, what is free and what costs WCoin.
Nov 13, 2026
PCGames like Dying Light, where nightfall changes the rules
Games like Dying Light are easy to find if you only want parkour or only want zombies. These eight keep the part that matters: a city that becomes a different place after dark.
Nov 13, 2026
PCGames like Portal 2, where one idea carries the whole game
Games like Portal 2 all share one habit: teach a single impossible trick, then spend a campaign breaking it. From rewinding objects through time to Escher geometry that loops back on itself.
Nov 13, 2026
BundlesPlanet Coaster DLC: skip the collection, buy the packs
The Planet Coaster DLC catalogue closed in 2019, so there is no curve left to wait out. Our record shows the collection bundle costs far more than assembling the same packs one by one.
Nov 13, 2026
XboxToxic Commando Game Pass: subscribe, or buy the key?
The Toxic Commando Game Pass add landed on 12 November. Our price record since late September shows the key route barely moved, which changes what a subscription is worth.
Nov 13, 2026
BlogSilkMU ჩვენი ახალი პარტნიორია: MU Online Season 6 პირდაპირ ბრაუზერში
SilkMU, MU Online-ის Season 6 სერვერი, რომელიც ბრაუზერში ან აპლიკაციად თამაშდება, 6 ნოემბერს გაიხსნა და ახლა playze-ის პარტნიორია. რას გთავაზობს, რა არის უფასო და რა ღირს WCoin.
Nov 13, 2026
PCTekken 8 ღირს თუ არა: 91 ქულა და შერეული შეფასება
Tekken 8 ღირს თუ არა, როცა კრიტიკოსებს 91 ქულა აქვთ დაწერილი, მოთამაშეებს კი „შერეული"? ფასი, ონლაინის მდგომარეობა და უკეთესი ალტერნატივა.
Sep 24, 2026
DealsStellaris იაფად: ოცდახუთი დამატება და ერთი გამოსავალი
Stellaris იაფად ყიდვა საბაზისო თამაშის შემთხვევაში მარტივია. ძვირი დამატებებია — და მათთვის არსებობს ვარიანტი, რომელსაც ბევრი ვერ ამჩნევს.
Sep 24, 2026
PCARK ფასი: Evolved თუ Ascended — რომელი ვიყიდოთ
ARK ფასი ორი სხვადასხვა თამაშის ფასია. რომელი ჯობია ქართული სიიდან, სად არიან მოთამაშეები და რატომ არ ღირს ახალ ვერსიაზე გადახტომა.
Sep 24, 2026
DealsCivilization 6 იაფად: რომელი დამატება ღირს მართლა
Civilization 6 იაფად ყიდვა მარტივია — საბაზისო თამაში იაფია და იაფად რჩება. რთული ის არის, რომ ცხრამეტი დამატებიდან სწორი აირჩიოთ.
Sep 24, 2026
FreebiesCS2 უფასოდ: რა ღირს სინამდვილეში Prime
CS2 უფასოდ ითამაშება საქართველოდანაც და ეს დემო არაა. ფული მხოლოდ Prime-ს სჭირდება — აი, რას იძლევა ის და ვის ღირს.
Sep 24, 2026
PCCuphead ღირს თუ არა: სირთულე, DLC და ორზე თამაში
Cuphead ღირს თუ არა: ექვსივე ქართულ მაღაზიაში ერთი ფასია, მეგობარს კი ასლი საერთოდ არ სჭირდება. სირთულე, ერთადერთი დამატება და როდის ვიყიდოთ.
Sep 23, 2026
DealsRimWorld იაფად: ბაზა, ხუთი დამატება და სწორი რიგი
RimWorld იაფად ყიდვა დამატებების რიგზეა დამოკიდებული, არა ფასდაკლების ლოდინზე. რომელი ხუთიდან ღირს ჯერ და რომელ მაღაზიას აქვს ფასდაკლება.
Sep 23, 2026New releases
All new releases →- AION 2Sep 30, 2026Free
- Onimusha: Way of the SwordSep 25, 2026$39.83
- DressmakerSep 21, 2026$13.49
- AniimoSep 16, 2026Free
- WARDOGSSep 10, 2026$29.73
- The Blood of DawnwalkerSep 2, 2026$57.61
- STAR WARS Zero Company™Aug 27, 2026$44.00
- How to FishAug 20, 2026$6.41
- Mortal Shell IIAug 20, 2026$37.49
- Anomaly PresidentAug 3, 2026$7.83
- EA SPORTS™ College Football 27Jul 9, 2026$64.59
- Unrailed 2: Back on TrackJun 11, 2026$17.03
- StarminerMay 27, 2026$29.99
- Invincible VSApr 30, 2026$29.99
- Mama's Sleeping AngelsMar 11, 2026$1.21
- MarathonMar 5, 2026$11.96
- Equinox: HomecomingMar 5, 2026$14.99
- Esoteric EbbMar 3, 2026$14.64
- Car Service TogetherFeb 4, 2026$13.09
- The Last StarshipFeb 3, 2026$19.99
- Touhou Blooming SoulJan 30, 2026$5.99
- Project: GorgonJan 29, 2026$24.00
- Dream of Corpse LadyJan 12, 2026$4.61
- Of Ash and SteelNov 24, 2025$16.74
Top games right now
All rankings →- 1Counter-Strike 2Free
- 2Dota 2Free
- 3PUBG: BATTLEGROUNDSFree
- 4Grand Theft Auto V Legacy—
- 5Terraria$2.08
- 6Tom Clancy's Rainbow Six SiegeFree
- 7Rust$20.19
- 8Garry's Mod$6.21
- 9Team Fortress 2Free
- 10Black Myth: Wukong$35.72
- 11HELLDIVERS™ 2$23.99
- 12ELDEN RING$38.88
- 13Apex Legends™Free
- 14Left 4 Dead 2$9.99
- 15Stardew Valley$12.11
- 16Wallpaper Engine$3.93
- 17Cyberpunk 2077$17.99
- 18Euro Truck Simulator 2$4.99
- 19Dead by Daylight$6.83
- 20Red Dead Redemption 2$13.71
- 21The Witcher 3: Wild Hunt$9.77
- 22Baldur's Gate 3$53.55
- 23Phasmophobia$15.19
- 24War ThunderFree
Buy at Steam 










