The 16x16 tilesets (LowRes) can be found in the ..\euo\pics subfolder consecutively numbered btiles20.png to btiles27.png. The 32x32 sets (HiRes) are labled btiles20.32.png to btiles27.32.png. Only of bties20 you will find HiRes version in the ..\euo\pics folder by default. To install new HiRes sets copy these into the ..\euo\pics folder and make sure that they are named correctly as can be seen above. Before you override anything make sure to have a backup.
Rescaled tilesets are the original 16x16 sets that are converted to 32x32 by using so called pixel art scaling algorithms. Such algorithms are commonly used for emulators such as DOSbox and the various Nintendo and Sega emulators. For more information see Image scalingon wikipedia.
hq2x was developed by Maxim Stepin and was used for this tileset. Some frames were altered after scaling to be in consistence with the official HiRes version of Btiles20.32. To use this set the suffix .hq2x has to be deleted, e.g. Btiles21.32.hq2x.png has to named Btiles21.32.png.
- hq2x, hq3x, and hq4x at HiEnd3D.com (archived copy)
- hqx project at code.google.com
- hqx-sharp project a port of hqx with added support for transparency, custom tolerances and seamless tiling - no downloads yet!
- 2d image filter project at code.google.com including the hqx filters and more
Some user created HiRes sets can be found on the Euotopia forum. Be aware that some sets might be outdated or are incompatible to certain game features.