|Creator(s)|| Squall (Original author)|
Despite being a custom map, original Counter-Strike version was very popular on community servers because of fast and fun gameplay, and short rounds.
Pool Day is a small symmetrical bomb defusal map originally created for Counter-Strike by Squall. Weapons were scattered over the floor of the both spawns. At the bottom of the pool in the middle are multiple HE grenades. It was ported to Counter-Strike: Source and Global Offensive by various authors.