Single-player games like Klaus Lee - Thunderballs
Below are 10 single-player Steam games similar to Klaus Lee - Thunderballs, 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 Klaus Lee - Thunderballs page.
Ranked picks
- 1

Bat Boy
Single-player alternative to Klaus Lee - Thunderballs — playable solo, no multiplayer required. Shares Action and Adventure with Klaus Lee - Thunderballs.
Ryosuke isn't just your regular high-school kid. He and his fellow sports-star friends secretly battle against the evil invading forces of Lord Vicious, hellbent on hosting sinister athletic events for his own amusement! Ryosuke is Bat Boy!
- 2

Tiny Thor
Single-player alternative to Klaus Lee - Thunderballs — playable solo, no multiplayer required. Shares Action and Adventure with Klaus Lee - Thunderballs.
Jump into this challenging retro platformer! Play as Thor, use his mighty hammer and unique items to explore the Northern Realms. Beware of mythical creatures blocking your path to become a god!
- 3

Kaze and the Wild Masks
Single-player alternative to Klaus Lee - Thunderballs — playable solo, no multiplayer required. Shares Action and Adventure with Klaus Lee - Thunderballs.
Go on a journey as Kaze in this 90’s classics inspired platformer. When the Crystal Islands get cursed, Kaze needs to save her friend Hogo while facing enraged living vegetables. Find the Wild Masks to unleash the powers of the legendary guardians and master land, sky and sea.
- 4

Oozi: Earth Adventure
Single-player alternative to Klaus Lee - Thunderballs — playable solo, no multiplayer required. Shares Casual with Klaus Lee - Thunderballs.
Oozi: Earth Adventure is a classic 2D platformer with old school gameplay - no puzzles, no punishment, just 100% pure classic platforming fun! Its most prominent features are HD visuals and beautiful hand-drawn art, but despite its visual style, it’s a good fit for all kinds of gamers!
- 5

Donut Dodo
Single-player alternative to Klaus Lee - Thunderballs — playable solo, no multiplayer required. Shares Action with Klaus Lee - Thunderballs.
If a long lost arcade game from 1983 resurfaced today, it would be Donut Dodo - a classic 2D platformer from the golden era, tough as nails and challenging for the whole family! Ready to top the high score table?
- 6

BattleBlock Theater®
Single-player alternative to Klaus Lee - Thunderballs — playable solo, no multiplayer required. Shares Action and Adventure with Klaus Lee - Thunderballs.
Welcome to BattleBlock Theater! You’ve got no where to go but up...on stage. Play single player or co-op to free your friends and save Hatty Hattington! Jump, solve and battle your way through a mysterious theater inhabited by highly technological felines.
- 7

Angry Video Game Nerd 8-bit
Single-player alternative to Klaus Lee - Thunderballs — playable solo, no multiplayer required. Shares Action and Adventure with Klaus Lee - Thunderballs.
The Angry Video Game Nerd is back in 8-bits! Battle through frantic platforming levels, defeat classic AVGN bosses, and save all of gaming, or test your skills in Endless Challenge mode!
- 8

Secret Agent HD
Single-player alternative to Klaus Lee - Thunderballs — playable solo, no multiplayer required. Shares Action and Adventure with Klaus Lee - Thunderballs.
Return to the remote island classic world of rewards and traps in the HD remake of Secret Agent! Guide 006 through puzzles & arcade challenges of your favorite missions, then uncover the whole new Episode loaded with all new puzzles, enemies, challenges, hazards & help 006 finally defeat DVS!
- 9

Sacred 2 Remaster
Single-player alternative to Klaus Lee - Thunderballs — playable solo, no multiplayer required. Shares Action and Adventure with Klaus Lee - Thunderballs.
Step into the world of Ancaria as one of seven heroes. Explore a massive open world and master combat arts and spells for epic loot. This remaster brings a fan-favorite back to life — with hi-res textures, better combat and bugfixes, for longtime fans and newcomers alike.
- 10

Comanche
Single-player alternative to Klaus Lee - Thunderballs — playable solo, no multiplayer required. Shares Action with Klaus Lee - Thunderballs.
Comanche is a modern helicopter shooter set in an alternative future. Fight in the evolving singleplayer campaign, or master your skills in Conflicts missions.