Rain Game is a fun and simple game that plays in a popup window. The game is currently in open beta, offering players an engaging experience. To start, players press a number key on the keyboard to select a level and then use arrow keys to move within the game.

Players aim to collect 50 raindrops while avoiding green raindrops, which deduct 10 points. It's worth noting that levels 3 and 4 are the same as level 1, and the game may have a few glitches that are still being worked on. Rain Game is coded in JavaScript using the HTML element, providing an interactive gaming experience.