S.U.M. - Slay Uncool Monsters

S.U.M. - Slay Uncool Monsters

Doomster Entertainment · February 19, 2021 · Education, Free to Play, Puzzle, Logic, Score Attack

S.U.M. - Slay Uncool Monsters is free to play — no purchase needed. We track it so you know if that ever changes.

PC
Very Positive94% · 1471playing now
This game is free to play. Get it on Steam →

Screenshots

S.U.M. - Slay Uncool Monsters price

S.U.M. - Slay Uncool Monsters is free to play — there is no purchase price, on Steam or anywhere else we track. We keep watching it, so if it ever stops being free the price history on this page will show when that happened and what it changed to.

About S.U.M. - Slay Uncool Monsters

In S.U.M. you'll put your Quick-Math skills to test! Fight very Uncool Monsters using Addition, Subtraction, Multiplication & Division. Level up and progress in the Campaign(s), or show your prowess in Endless Mode with Leaderboards.

S.U.M. - Slay Uncool Monsters — game info

Platforms
Windows
Steam Deck
Verified
Player modes
Single-player
Controller
Full controller support
PC Game Pass
Not included

DLC & expansions

What Steam players say

Recent verbatim reviews from Steam — separate from playze.io community reviews below.

Not recommended Nov 8, 2025
"S.U.M. - Slay Uncool Monsters" is a poorly made educational game, an arithemetic "incrementer" game with a thin pixelcrap "RPG" veneer glued on badly with library paste. This very squarely exemplifies the old adage that educational games don't make education better, but they do make gaming worse. A luzly bad pixelcrap game where you kill monsters by doing sums is one thing, but the toxic monetisation on this really kills it. This features really godawful pixelcrap "art" instead of real graphics. It's hard to say if this was because the developer didn't have the skill to do the job of creating 3D visuals, or couldn't afford to hire someone who does, but it also doesn't matter. What matters is that this looks much worse than most other games because of that decision, and that's a major deterrent to gamers. Games like Terraria and Stardew Valley succeeded [i]despite[/i] the bad graphics, not because of them. Now on to pricing and value for gamers. You're expected to pay up $7 USD to unlock content through DLC purchases. The game should not be considered completely unlocked until you empty your wallet for the developer. This is misleading and predatory pricing on a product f…
2 found this helpful
Recommended Sep 28, 2026
Simple, charming, intuitive and fun!
1 found this helpful
Recommended Jan 2, 2026
kids like it 8 and 10
Recommended Nov 17, 2025
Игра 'S.U.M. - Slay Uncool Monsters' – это увлекательный тайм-киллер, идеально подходящий для коротких игровых сессий. Простая, но затягивающая математическая механика заставляет мозг работать, пока ты уничтожаешь смешных, но "некрутых" монстров. Решение простых математических задач (сложение) для нанесения урона монстрам оказывается на удивление релевантным и вознаграждает за быстрое мышление. Мне нравится минималистичный, почти мультяшный стиль, который хорошо сочетается с общей концепцией игры. Прогрессия довольно быстрая, что позволяет постоянно чувствовать себя продвигающимся вперёд, открывая новых монстров и бонусы. Однако, после довольно продолжительного времени игра становится несколько однообразной. Не хватает разнообразия в типах задач или, возможно, новых механик, чтобы поддерживать интерес на долгосрок. Тем не менее, для бесплатной игры, S.U.M. предлагает достойное развлечение и хорошую тренировку для мозга. Рекомендую для тех, кто ищет что-то простое, веселое и немного развивающее.
Recommended Oct 20, 2025
Cute retro graphics, music is not off putting after hearing it for the 10,000th time, Easy to get my little one to play/learn. I even had a little fun playing it... and I know how to add my numbers! A good value.
Not recommended Jul 25, 2025
The grind is bad, repetitive, and not worth it. Play a different game or have your computer run the GIMPS distributed computing project instead so it can verify new prime numbers here: https://www.mersenne.org/ That would be a better use of your computer power than running this game.

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