Ultimate Level Maker Builder is an Android game by BVB Games that lets you create and share 2D platforming levels with the world. With this app, you can build levels that are filled with tricky obstacle courses, crazy contraptions, or even longer adventure-style levels. The app offers different level themes to suit your mood, including a blank theme for easy editing.

With hundreds of blocks, enemies, and objects to choose from, you can create levels of all sizes. The app also includes decoration blocks and sloped ground tiles to create more detailed environments. You can add power-ups to your levels, including upgrades to the player's armor and jump height. Plus, you can place blocks in the foreground and background and even add a sub-world to your levels.

One of the unique features of Ultimate Level Maker Builder is that electricity can be conducted by metal blocks to power pistons and more. The app also has dynamic fire spreading, where wooden blocks can burn and ice blocks can melt. You can share your levels with the world and download levels uploaded by other players, making it a fun and social experience. Overall, Ultimate Level Maker Builder is an excellent tool for creating and sharing 2D platforming levels.