Choose They Are Billions
Choose They Are Billions if you want the Steam Leaderboards side of the pairing. 18,746 Steam reviews back the pick.
They Are Billions vs Undead Defense TD
They Are Billions and Undead Defense TD both land in Strategy on Steam, which is why they keep getting compared. The comparison below is built from each game's Steam metadata — release year, genres, categories, Steam Deck status, price, and review score — refreshed daily by imho.run's scraper. Headline differences: Both are Strategy games on Steam. They Are Billions is Deck Playable on Steam Deck; Undead Defense TD has no Deck rating yet. No login or purchase needed — scroll for the full table, the verdict FAQ, and links to ranked similar games for both titles.
Which should you pick?
Choose Undead Defense TD
Choose Undead Defense TD if you want the Custom Volume Controls, Playable without Timed Input, and Save Anytime side of the pairing.
Both They Are Billions and Undead Defense TD sit in Strategy on Steam, so either pick lands in the same broad neighborhood. Use the side-by-side table for the feature view, or follow the "Games like" links below to see ranked alternatives for either title.
Side-by-side comparison
 They Are Billions |  Undead Defense TD | |
|---|---|---|
| Released | 2019 | — |
| Genres | Strategy | Strategy |
| Platforms | Windows | Windows |
| Steam Deck | Deck Playable | Unrated |
| Price | 29.99 USD | Price unknown |
| Steam reviews | 80.2% positive (18,746 reviews) | — |
| Multiplayer | Single-player only | Single-player only |
| Developers | Numantian Games | Sugradh_Dev |
Side by side
- Both are Strategy games on Steam.
- They Are Billions is Deck Playable on Steam Deck; Undead Defense TD has no Deck rating yet.
They Are Billions vs Undead Defense TD — FAQ
- Are They Are Billions and Undead Defense TD similar?
- They overlap on Strategy on Steam, so the catalogue groups them together — but "similar" depends on the specific mechanics. Use the genre + category rows above to decide whether the overlap matches what drew you to the one you've already played.
- Does They Are Billions run on Steam Deck?
- Yes — They Are Billions is rated Deck Playable by Valve. Undead Defense TD doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.