Choose Thetaball
Choose Thetaball if you want an Action, Indie, and Simulation experience. Thetaball launched in 2018.
Thetaball vs AO Tennis 2
Thetaball and AO Tennis 2 both land in Sports 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 Sports games on Steam. Thetaball (2018) is 2 years older than AO Tennis 2 (2020). AO Tennis 2 is currently ~0% cheaper on Steam than Thetaball (9.99 USD vs. 9.99 USD). 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 AO Tennis 2
Choose AO Tennis 2 if you want the Online PvP and Online Co-op side of the pairing. AO Tennis 2 launched in 2020.
Both Thetaball and AO Tennis 2 sit in Sports on Steam and both list Multi-player, Shared/Split Screen, and Steam Leaderboards, 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
 Thetaball |  AO Tennis 2 | |
|---|---|---|
| Released | 2018 | 2020 |
| Genres | Action, Sports, Indie, Simulation | Sports |
| Platforms | Windows | Windows |
| Steam Deck | Unrated | Deck Playable |
| Price | 9.99 USD | 9.99 USD |
| Steam reviews | 7 reviews | 68.1% positive (376 reviews) |
| Multiplayer | Multi-player, Shared/Split Screen Co-op, Co-op | Multi-player, Online Co-op, Shared/Split Screen Co-op |
| Developers | Tim Sheehan | Big Ant Studios |
Side by side
- Both are Sports games on Steam.
- Thetaball (2018) is 2 years older than AO Tennis 2 (2020).
- AO Tennis 2 is currently ~0% cheaper on Steam than Thetaball (9.99 USD vs. 9.99 USD).
- Both support cooperative play.
- AO Tennis 2 is Deck Playable on Steam Deck; Thetaball has no Deck rating yet.
Thetaball vs AO Tennis 2 — FAQ
- Should I play Thetaball or AO Tennis 2 first?
- If you want chronology, Thetaball (2018) came out before AO Tennis 2 (2020). If neither is a sequel to the other, order doesn't really matter — start with whichever fits your current mood, since both share enough on Steam to make either a reasonable opener.
- Are Thetaball and AO Tennis 2 similar?
- They overlap on Sports 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.
- Do both Thetaball and AO Tennis 2 have co-op?
- Yes — both list a co-op category on Steam. Specifics differ: Thetaball ships Shared/Split Screen Co-op, Co-op; AO Tennis 2 ships Online Co-op, Shared/Split Screen Co-op.