There is no official Minecraft version numbered 15.2 from Mojang/Microsoft. Minecraft’s official Java Edition versions follow a 1.x or 1.xx scheme (for example, 1.20) and Bedrock editions use different numbering. When people reference “Minecraft 15.2” they usually mean one of the following:
Minecraft Classic is an official web-based version released for the game's 10th anniversary. It requires no downloads, works on almost any device, and includes 32 different blocks to build with. It also features multiplayer—you can invite up to nine friends to join your browser-based world by sharing a simple link. This is the safest and most reliable unblocked Minecraft method because it's an official Mojang release. unblocked games minecraft 15 2
Includes the core survival and creative modes from the Redstone Update (v1.5.2) era. There is no official Minecraft version numbered 15