Castle Run

Castle Run was one of those games you'd find in the late 2000s, tucked away on a Flash gaming portal. It belonged to that era of simple, direct browser games you could pick up for a few minutes between other tasks. The specifics of its developer or exact release year aren't widely remembered, but its straightforward premise stuck with many players.

You control a small creature, like a mouse or a fox, navigating a series of single-screen castle rooms. Your goal is to find the exit door in each one. Moment to moment, you're using the arrow keys to run and jump across platforms, avoiding patrolling enemies and bottomless pits. You collect coins scattered around for a higher score, and sometimes you need to find a key to unlock the door. The pace is quick, and the difficulty comes from timing your movements precisely around the enemies' patrol routes. It feels like a tense, careful dash through a haunted house.