The demo is available to download here on ModDB.
Being a demo, there are still minor bugs to be expected.
This is a demo version (meaning it does not have every single level from v0.2 Beta RC1). There are seven playable levels. All music is also included in this download.
A new fifth character, Arthur, is playable in this demo.
I do not know how much longer the full v0.2.5 will take to be completely ready, so this fast-loading, low-memory requirement demo version is certainly better than waiting indefinitely for the full release of v0.2.5, whenever it will be ready.