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
Rectangle Jump
Single-player alternative to Klaus Lee - Thunderballs — playable solo, no multiplayer required. Shares Action and Adventure with Klaus Lee - Thunderballs.
Rectangle Jump is a challenging physics based platformer with puzzles, story, over 64 skins, and a variety of mechanics, where you play as a RECTANGLE! that reacts realistically to surfaces and gravity, like you are actually playing as a rectangle!
- 2
Swords & Bones 2
Single-player alternative to Klaus Lee - Thunderballs — playable solo, no multiplayer required. Shares Action and Adventure with Klaus Lee - Thunderballs.
Swords and Bones 2 is an action-platform game with RPG features, inspired by 80s and 90s classics! Fight through levels filled with monsters, avoid traps and collect power-ups & trophies in this new epic second chapter!
- 3
Lode Builder
Single-player alternative to Klaus Lee - Thunderballs — playable solo, no multiplayer required. Shares Action and Adventure with Klaus Lee - Thunderballs.
Lode Builder is the evolution of the classic Lode Runner. Collect all the gold using new tactical tools. Need to climb? Build a ladder. Pit ahead? Stretch a chain. Tired of Robots? Burn them ALL! Gather resources across the map and don't waste a single one.
- 4
Blokour
Single-player alternative to Klaus Lee - Thunderballs — playable solo, no multiplayer required. Shares Adventure and Casual with Klaus Lee - Thunderballs.
Jump, build and fight through the dungeons of Blokour! In this puzzle platformer, you place and break blocks whilst solving puzzles and dodging dangerous traps. Featuring 125 levels, 4 boss fights and more than 60 different types of blocks, you'll venture through a wide range of exciting challenges.
- 5
KUBO 3
Single-player alternative to Klaus Lee - Thunderballs — playable solo, no multiplayer required. Shares Action and Adventure with Klaus Lee - Thunderballs.
KUBO 3 is a brand-new retro 8-bit adventure from SJ Games — created by a young developer from France, with a little help from his dad.
- 6
Freedom! Do or Die
Single-player alternative to Klaus Lee - Thunderballs — playable solo, no multiplayer required. Shares Action and Casual with Klaus Lee - Thunderballs.
When terrorism threatens the world there is no need to send a bunch of iconic movie heroes back from the '80s. One under-funded over-powered mercenary is all that's needed to save the world in this epic run 'n' gun destruction-fest of a homage to Broforce!
- 7
Lokko
Single-player alternative to Klaus Lee - Thunderballs — playable solo, no multiplayer required. Shares Action and Casual with Klaus Lee - Thunderballs.
Lokko is a bouncy, action-packed 3D platformer where YOU create the adventure! In Lokko, players race to deliver hot pizzas around the globe while battling the sinister Goobol fast-food corporation.
- 8
Water: Transformer
Single-player alternative to Klaus Lee - Thunderballs — playable solo, no multiplayer required. Shares Action and Adventure with Klaus Lee - Thunderballs.
This is a platform jumping game, you can obtain different abilities by transforming between solid, liquid, and steam three forms, thus crossing obstacles and solving puzzles. The workshop allows you design and share their own created maps with the players all around the world.
- 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.