Single-player games like Bulby - Diamond Course
Below are 9 single-player Steam games similar to Bulby - Diamond Course, 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 Bulby - Diamond Course page.
Ranked picks
- 1

Breaking Box
Single-player alternative to Bulby - Diamond Course — playable solo, no multiplayer required. Shares Indie with Bulby - Diamond Course.
Breaking Box is a 3D multiplayer game with a level editor in-game. You can create your own levels, challenge levels, and enjoy the competition with friends!
- 2

War Islands: A Co-op Adventure
Single-player alternative to Bulby - Diamond Course — playable solo, no multiplayer required. Shares Indie and Adventure with Bulby - Diamond Course.
Embark on a magical journey with 3 adventurers. Overcome fearsome beasts and challenging puzzles in an online third-person co-op game with your friends.
- 3

The Colorful Creature
Single-player alternative to Bulby - Diamond Course — playable solo, no multiplayer required. Shares Indie and Adventure with Bulby - Diamond Course.
The Colorful Creature is difficult platformer with puzzle color mechanics. Play over 350 levels with diverse gameplay that have many items and hazards, in-game level editor, local multiplayer, endless run, customizable skins & hats, steam workshop and more!
- 4

Hacktag
Single-player alternative to Bulby - Diamond Course — playable solo, no multiplayer required. Shares Indie and Adventure with Bulby - Diamond Course.
Hacktag is a fast-paced two-player co-op stealth-game with unique asymmetric gameplay. Play as the stealth Agent in the field or as the virtually-infiltrated Hacker and work together to carry out espionage missions where nothing goes as expected!
- 5

Levelhead
Single-player alternative to Bulby - Diamond Course — playable solo, no multiplayer required. Shares Indie and Adventure with Bulby - Diamond Course.
Deliver those goods, real good - or get turned into scrap trying! Chaotic co-op platforming, genre-bending power-ups, a challenging campaign, and endless community-built levels await, so grab a friend and GO!
- 6

Let's Cook Together 2
Single-player alternative to Bulby - Diamond Course — playable solo, no multiplayer required. Shares Indie and Adventure with Bulby - Diamond Course.
Let’s Cook Together 2 is a frantic, cooking game for 1-4 players. Learn over 65 dish recipes, master 250+ levels, upgrade your kitchen appliances and travel around the world to make cooking meaningful again. Communication is the key!
- 7

PHOGS!
Single-player alternative to Bulby - Diamond Course — playable solo, no multiplayer required. Shares Indie and Adventure with Bulby - Diamond Course.
In PHOGS! you play as a duo of dogs on a captivating, puzzle-filled adventure. Linked by a stretchy belly, you’ll need to bark, bite and bounce your way through obstacles set across the themed worlds of Food, Sleep and Play, in co-op or single-player.
- 8

Bloody Trapland
Single-player alternative to Bulby - Diamond Course — playable solo, no multiplayer required. Shares Indie and Adventure with Bulby - Diamond Course.
Bloody Trapland is a fast-paced multiplayer platformer where the levels are filled with dozens of dangerous traps and tricky jumps that stand in your way! Play co-op with your friends or take on the challenges on your own. With support for up to 4 players at once, local and/or online.
- 9

Flixy Cats
Single-player alternative to Bulby - Diamond Course — playable solo, no multiplayer required. Shares Indie and Adventure with Bulby - Diamond Course.
Flixy Cats is a 3D platform where you can control Max and his entire cat crew as they defend themselves by hitting the rats with marshmallow mallets. You can explore different worlds, discover new power ups to help in the journey, team up with another cat to assist you and much more.