Single-player games like S.U.M. - Slay Uncool Monsters
Below are 14 single-player Steam games similar to S.U.M. - Slay Uncool Monsters, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like S.U.M. - Slay Uncool Monsters page.
Ranked picks
- 1
On Key Up: A Game for Keyboards
Single-player alternative to S.U.M. - Slay Uncool Monsters — playable solo, no multiplayer required. Shares Casual with S.U.M. - Slay Uncool Monsters.
Turn your keyboard into a chaotic physics toy! Solve creative challenges across 24 levels using nothing but your keys in this quirky, tactile puzzler.
- 2
Falling Face Fragments
Single-player alternative to S.U.M. - Slay Uncool Monsters — playable solo, no multiplayer required. Shares Indie and Casual with S.U.M. - Slay Uncool Monsters.
Falling Face Fragments is a fun falling block puzzle game where you must assemble faces correctly to clear them and hear them say "uh!" Try to clear many faces at once to get high scores in arcade mode, be the last one standing in local 2-player, and solve puzzles in 60 unique mission mode levels.
- 3
Kubikon 3D
Single-player alternative to S.U.M. - Slay Uncool Monsters — playable solo, no multiplayer required. Shares Indie and Casual with S.U.M. - Slay Uncool Monsters.
Cubes, cubes, cubes... Cubes everywhere. Whether you're in the mood to challenge your brain or just relax, Kubikon is here for you!
- 4
Simply Moose
Single-player alternative to S.U.M. - Slay Uncool Monsters — playable solo, no multiplayer required. Shares Indie and Casual with S.U.M. - Slay Uncool Monsters.
Reflex-based puzzle game based on Boulder Dash principles, but with its own unique style.
- 5
Dominant Mind
Single-player alternative to S.U.M. - Slay Uncool Monsters — playable solo, no multiplayer required. Shares Casual with S.U.M. - Slay Uncool Monsters.
Are you looking for brain games? Get your brain training now! Challenge yourself and improve your logic with this fun mind game. It can be played as an easy entertaining pastime game or addictive brain training game. Challenge yourself and friends with this top board game.
- 6
Milliopoly - Language Quiz and Learning
Single-player alternative to S.U.M. - Slay Uncool Monsters — playable solo, no multiplayer required. Shares Indie and Casual with S.U.M. - Slay Uncool Monsters.
Become a millionaire by using your foreign language knowledge. Invite your friends and family and practice your mother tongue or foreign languages!
- 7
Inside the Box
Single-player alternative to S.U.M. - Slay Uncool Monsters — playable solo, no multiplayer required. Shares Indie and Casual with S.U.M. - Slay Uncool Monsters.
Inside the box, there is a set of 48 boxes with puzzles inside. Test your logic by solving the puzzles from all the boxes.
- 8
Read Clock Time
Single-player alternative to S.U.M. - Slay Uncool Monsters — playable solo, no multiplayer required. Shares Indie and Casual with S.U.M. - Slay Uncool Monsters.
Everyone knows the dial of a mechanical watch, but sometimes the position of the hands makes you wonder!?
- 9
This Strange Realm Of Mine
Single-player alternative to S.U.M. - Slay Uncool Monsters — playable solo, no multiplayer required. Shares Indie with S.U.M. - Slay Uncool Monsters.
This Strange Realm Of Mine is a First Person Shooter mixed with poetry and psychological horror. Graphic style is 3D mixed with pixel art.
- 10
Koala Kids
Single-player alternative to S.U.M. - Slay Uncool Monsters — playable solo, no multiplayer required. Shares Indie with S.U.M. - Slay Uncool Monsters.
Koala Kids is a puzzle-platformer game, in the style of retro games like Lode Runner. Includes Hot-seat Coop and Level Editor.
- 11
3DRPG
Single-player alternative to S.U.M. - Slay Uncool Monsters — playable solo, no multiplayer required. Shares Indie with S.U.M. - Slay Uncool Monsters.
3DRPG is a voxelized old-school RPG where you explore a Randomly Generated world filled with random dungeons, towns and people! Every character in the game is recruitable. Hunt for prey or go fishing for food. Search for treasure in dungeons and fight monsters on the way!
- 12
Oh No! Bugs!
Single-player alternative to S.U.M. - Slay Uncool Monsters — playable solo, no multiplayer required. Shares Indie and Casual with S.U.M. - Slay Uncool Monsters.
Oh No! Bugs! Is a casual arcade game where you squash bugs by pushing blocks. Play solo or with friends, locally or online!
- 13
Koala Kids Golf
Single-player alternative to S.U.M. - Slay Uncool Monsters — playable solo, no multiplayer required. Shares Indie and Casual with S.U.M. - Slay Uncool Monsters.
Control your Koala and collect treasure while avoiding dangers in this non-traditional Golf Game. Play through Challenges or with friends, Local or Online!
- 14
You Shouldn't Be Here
Single-player alternative to S.U.M. - Slay Uncool Monsters — playable solo, no multiplayer required. Shares Indie with S.U.M. - Slay Uncool Monsters.
This short psychedelic visual novel takes place in a strange world inhabited by harrowing creatures shunned by the light. You’ll meet someone who has made this world their own, and in doing so, learn the reason why you shouldn't be there.