Serious Sam HD: The Second Encounter and Rubber Ducky and the Rainbow Gun both land in Action, Indie 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 share Action, Indie on Steam. Serious Sam HD: The Second Encounter (2010) is 5 years older than Rubber Ducky and the Rainbow Gun (2015). Rubber Ducky and the Rainbow Gun scores higher on Steam reviews (90.3% positive) than Serious Sam HD: The Second Encounter (89.3% positive). No login or purchase needed — scroll for the full table, the verdict FAQ, and links to ranked similar games for both titles.
Choose Serious Sam HD: The Second Encounter if you want the Multi-player, Online PvP, and Online Co-op side of the pairing. On Steam, it has co-op, so you can bring a friend. Serious Sam HD: The Second Encounter launched in 2010.
Choose Rubber Ducky and the Rainbow Gun if it's currently about 95% cheaper on the Steam Store. Rubber Ducky and the Rainbow Gun launched in 2015.
Both Serious Sam HD: The Second Encounter and Rubber Ducky and the Rainbow Gun sit in Action and Indie on Steam and both list Steam Leaderboards, so either pick lands in the same broad neighborhood. Steam reviews are nearly tied (89.3% vs 90.3% positive), so genre fit is the cleanest tiebreaker — scroll the table for the feature-by-feature view.
 Serious Sam HD: The Second Encounter |  Rubber Ducky and the Rainbow Gun | |
|---|---|---|
| Released | 2010 | 2015 |
| Genres | Action, Indie | Action, Indie |
| Platforms | Windows | Windows |
| Steam Deck | Unrated | Unrated |
| Price | 19.99 USD | 0.99 USD |
| Steam reviews | 89.3% positive (319 reviews) | 90.3% positive (124 reviews) |
| Multiplayer | Multi-player, Online Co-op, Co-op | Single-player only |
| Developers | Croteam | John Szymanski |
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