Free games like Star TD
Below are 8 free-to-play Steam games similar to Star TD, ranked by player overlap and content similarity. No purchase or Steam login required to view the list. Every pick is a full free-to-play title — not a demo, trial, or time-limited giveaway. imho.run's catalogue refreshes daily, so newly free or newly popular titles surface here without manual editing.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Star TD page.
Ranked picks
- 1
Die in the Dungeon: Origins
Free-to-play alternative to Star TD — no purchase or trial window. Shares Strategy with Star TD.
Fight your way through a mysterious dungeon in this deck-building, turn-based roguelike game where you don't use cards, but DICE! Deal with enemies by combining dice on your board, boost their effects with magical relics, and discover the story behind Die in the Dungeon!
- 2
Shape of Dreams: Prologue
Free-to-play alternative to Star TD — no purchase or trial window.
《Shape of Dreams: Prologue》is a unique game that blends action roguelite with MOBA-style gameplay. Edit your character's Memories to create your own champion. Face all challenges alone or play with friends in up to 4-player co-op.
- 3
Limbus Company
Free-to-play alternative to Star TD — no purchase or trial window.
As the Executive Manager of Limbus Company, lead your group of twelve Sinners, venture into the buried facilities of Lobotomy Corporation, and lay claim on the Golden Boughs.
- 4
Minion Masters
Free-to-play alternative to Star TD — no purchase or trial window. Shares Strategy with Star TD.
An addictive fast-paced hybrid of Card games & Tower-Defense. Play 1v1 - or bring a friend for 2v2 - and engage in epic online multiplayer battles full of innovative strategy and awesome plays! Collect 200+ cards with unique mechanics, all free!
- 5
Bloons TD Battles 2
Free-to-play alternative to Star TD — no purchase or trial window. Shares Strategy with Star TD.
From the creators of Bloons TD6... Bloons TD Battles 2 is a brand new installment of the top-rated head-to-head tower defense game. Gather your Hero, choose your team of powerful Monkey Towers, and prepare to battle one on one against other players and relentless waves of Bloons!
- 6
Alien Swarm
Free-to-play alternative to Star TD — no purchase or trial window.
Co-operative multiplayer game and complete code base available for free.
- 7
Yet Another Zombie Defense
Free-to-play alternative to Star TD — no purchase or trial window. Shares Strategy with Star TD.
Darkness is coming. How long can YOU survive? Build your base by day, defend it by night. Play in online or local co-op. Stay alive as long as you can.
- 8
Ninja Kiwi Archive
Free-to-play alternative to Star TD — no purchase or trial window. Shares Strategy with Star TD.
Enjoy some of the best loved Flash games of the past in this awesome time capsule of over 60 Ninja Kiwi classics. Experience a piece of history and play the original Flash games that spawned the worldwide phenomenon of Bloons TD.