

BastionOS
Feral Paw · 2026 · Incremental, Arcade, Action, Casual, Idler
PC
Very Positive98% · 141
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About BastionOS
//Select a level, and aim your tower's artillery towards incoming enemies. BOOM! Grab any precious resources the enemies drop.//The tower will inevitably fall. Under your command, it will rise even stronger. Fortify your tower with weapons and upgrades.//Research new and increasingly powerful tech.//Defend the Bastion until the end. You and your weapons research program are the last line of defense against the machine army. There's no telling if this reckless operation will allow Humanity to survive. What will happen when the horde becomes insurmountable?
What Steam players say
Recent verbatim reviews from Steam — separate from playze.io community reviews below.
It's really bad for players with colorblindness, as there are so many different instances where red is next to green, and blue is next to purple. These are the classic traps for people with deuteranopia. The game does a very poor job providing other ways to distinguish enemies, since their unique shapes all just sort of blend together in peripheral vision when there are a lot of enemies on screen. I thought about contacting the developers for the sake of helping them address the issue and help them introduce proper colorblind support, but based on the discussion channels, they appear to no longer be responding to anyone, so it's not worth the effort.1 found this helpful
Sorry about the gameplay time. Offline mode does not bother to track it as playtime: [h2]Incremental Action Done Well![/h2] If you know me (which you probably don’t), I’m not usually a fan of incremental games. Most of them follow the same formula: load the game, walk away, and let it play itself. There’s little engagement, and the experience often feels repetitive. BastionOS, however, stands out. It’s a blend of semi-idle and interactive tower defense gameplay, keeps you involved for most of the journey. Towards the endgame, it does shift more toward an idle experience as you face endless waves of red minions threatening humanity’s last bastion, but by then, it feels well-earned as you sit back and relax knowing you did a lot of the heavy lifting, moving the artillary around to defeat each wave and boss. I didn’t 100% the achievements, only managed 50 out of 52, but I genuinely enjoyed my time. The game respects your time, offers a chill and relaxing experience, and gives you meaningful choices. Instead of forcing you down a "Hey! buy this next cheap upgrade" path, you have the freedom to choose your upgrades and playstyle. This flexibility lets you become stronger or weaker b…
4-5 hours of farming, but not bad. The weapon upgrades are pretty unique. A decent game at any indie price, but a fantastic game while on sale for ~$2.50. 4/5 - Definite buy if you enjoy these types of games.
nice Style, gameplay is fairly easy for the price its very good :)
I loved this. A quick and cheap incremental game. Easy going and not too demanding. Completed it with all achievements in about 5 hours. It has a fantastic art style. The enemies are simple but cool with a great array of weapons. I actually wish you could play it more but as soon as you complete it, there really is no reason to go back once everything's been unlocked
Great fun
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