How to Spot the Game You Saw in a Video
The reason people search for these games by description instead of by name is that the name is meaningless until you have played one. Here is the visual shorthand for each game, so you can look at a thumbnail and know which one you saw.
A rocket climbing into a dark sky
That is Cosmillion. The whole aesthetic is a launch pad, a night sky and a rocket that goes higher the rarer your answer is. The prompt screen usually shows a worked example, like "Name a fruit" with a common answer at +10 and an obscure one at +100.
A rabbit underground
That is Hopdown. The screen is a cross-section of soil with a bunny digging down through layers, pumpkins and Halloween decorations on the surface. If you remember a rabbit and a dirt layer, it is Hopdown.
Balloons rising over a forest
That is Noillirk — the version where the most common answer wins, so your balloons climb the sky. The start screen is a forest with a pond at the bottom and a small character standing at the base.
A small crashed alien at night
That is STRANDED. The scene is a pixel-art forest at night with a pumpkin and a little green alien, and six questions to get him home. The score sits in the top left and the question count and timer sit under the picture.
A history timeline with a traveller
That is Eraly, and it looks like nothing else here — a retro CRT screen with scanlines and amber text. You are given a historical moment and have to place it on a timeline by typing a year.
Found the game you meant?
Every game here has a page with a real screenshot, the scoring rules and a link to the original.