Choo Choo Charles is a 2023 indie horror video game developed and published by PlayClips Games. The player controls a monster-hunting archivist with the goal of upgrading their train's defenses in order to fight and defeat the titular character, Choo Choo Charles, an evil spider-train hybrid monster that wanders the landscape looking for people to eat. The game received mixed reviews from critics, though player reception was more positive.

Choo-Choo Charles Gameplay consists of travelling across an open world[1] map in a train, performing tasks for non-player characters, collecting loot, and using that loot to upgrade the train in order to fight against Choo Choo Charles, who periodically hunts for the player. The goal of the game is to collect three glowing eggs that will summon Charles to battle the player as a final boss.[2] The game takes players around three to five hours to complete.[3]

The map is an island lined with interconnected railway tracks, which carry the player's train to a series of locations where quests can be completed for non-player characters. There are four main non-player characters that progress the main quest. Besides Charles, the player also faces armed human enemies, who guard the three glowing eggs needed to complete the game. The game encourages players to use stealth to sneak past these guards to steal the eggs and escape without notice, although it is also possible to simply run past them. The game's optional quests generally consist of fetching objects for non-player characters.[4]