Image Merge

If you're into developing or designing games, then Image Merge is the software you should try out. It's a free, easy-to-use Python script that allows you to merge multiple PNG files seamlessly. Image Merge ensures the creation of spritesheets that are visually appealing and of high quality.

Using Image Merge is straightforward; it has a command-line interface that simplifies the process, making it easy for anyone to use. The software takes in any number of PNG files as command line arguments, and then generates an out.png file while retaining all alpha data, ensuring that the final image doesn't lose any quality.

By using Image Merge, you can merge different images with diverse background colours to generate stunning images that would look great as spritesheets in your game. The software's ability to retain alpha data enables you to merge files with transparent backgrounds without losing the transparency.

Considering that it's free, easy-to-use, and supports PNG files with alpha data, Image Merge is a handy software tool that can significantly benefit any game developer or designer. Give it a try and see how much time and effort it will save you.