client features

The Mana client has the following features and capabilities:

General

Consists entirely of free, open source software
Runs on Windows, Linux and several other operating systems((MacOS is officially unsupported for now. We need an OSX developer.))
Can download content updates from the web
Support for custom branding
Capable of connecting to different game worlds
Support for a modified eAthena server (named Tmw-eAthena) and the Mana server

OpenGL support
Variable screen resolution
Maps with up to 40004000 tiles known to work((Larger should work fine on sufficiently capable computers. WH limited to ~2 billion on most computers.))
Virtually unlimited((over 2 billion on most computers)) map layers
Support for extra high tiles for easy mapping of fringe objects
Unlimited((over 2 billion on most computers)) number of foreground and background images with configurable parallax, auto, and fixed scrolling.
32 bit colors with alpha transparency
Recoloring of graphics at runtime
Support for animated tiles
Powerful particle engine
Smooth scrolling
Very flexible sprite system
Pixel-accurate movement((only on the Mana server, not on eAthena))
TrueType Font rendering with Unicode support ((extent of Unicode support depends on the font file used))