He doesn't want help. He has been offered money/help many many times. He would rather his games die slowly at snails pace. I been waiting for more development on GP Bikes for about 7 years. I gave up moved on. Motogp is better these days anyway.I tried this game a few years back and it was fun, but as noted a little light on the content due to the developer having many projects under his belt at once and being just one man. (given that fact the work he does is amazing).
If more people support the project maybe he can get some more help?
It's really great to see this little nearly unknown project getting some press from RD!
BTW: When I tried the game it had native VR support making it the only VR bike game I can think of!