IMHO.

Hamilton's Great Adventure vs Only One Rectangle

Hamilton's Great Adventure and Only One Rectangle both land in Indie, Casual 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 Indie, Casual on Steam. Hamilton's Great Adventure (2011) is 9 years older than Only One Rectangle (2020). Only One Rectangle is currently ~90% cheaper on Steam than Hamilton's Great Adventure (0.99 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 Hamilton's Great Adventure

Choose Hamilton's Great Adventure if you want an Adventure game with Multi-player, Shared/Split Screen, and Steam Leaderboards. On Steam, it's Steam Deck Verified, so handheld play works out of the box. Hamilton's Great Adventure launched in 2011.

Choose Only One Rectangle

Choose Only One Rectangle if you want an Action experience. On Steam, it's currently about 90% cheaper on the Steam Store. Only One Rectangle launched in 2020.

Both Hamilton's Great Adventure and Only One Rectangle sit in Indie and Casual 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

Hamilton's Great Adventure vs Only One Rectangle — Steam metadata comparison
Hamilton's Great Adventure — Steam game coverHamilton's Great AdventureOnly One Rectangle — Steam game coverOnly One Rectangle
Released20112020
GenresIndie, Adventure, CasualAction, Indie, Casual
PlatformsWindowsWindows
Steam DeckDeck VerifiedUnrated
Price9.99 USD0.99 USD
Steam reviews65.5% positive (119 reviews)—
MultiplayerMulti-playerSingle-player only
DevelopersFatsharkSkull Box Games

Side by side

Hamilton's Great Adventure vs Only One Rectangle — FAQ

Should I play Hamilton's Great Adventure or Only One Rectangle first?
If you want chronology, Hamilton's Great Adventure (2011) came out before Only One Rectangle (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 Hamilton's Great Adventure and Only One Rectangle similar?
They overlap on Indie, Casual 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 Only One Rectangle have multiplayer like Hamilton's Great Adventure?
No. Hamilton's Great Adventure supports multiplayer on Steam (Multi-player), while Only One Rectangle is listed as single-player only.
Does Hamilton's Great Adventure run on Steam Deck?
Yes — Hamilton's Great Adventure is rated Deck Verified by Valve. Only One Rectangle doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.