It takes a while to go through all the games, so I ended up keeping a spreadsheet of all the scores then entering them in when done. This took a couple of evenings, and there were still a couple of games that i didn't really spend much time on as they just didn't grab me straight away.
I spent four lunchtimes going through the games and storing notes and approximate scores. Then I went back through my notes, listed the games in order, and worked on cut-off points which I felt reflected my opinions fairly and didn't go over 25. If it didn't grab me within a couple of minutes then it didn't get points because a minigame should be something you can enjoy immediately.
I think I'll follow Dzzd in posting my allocation. Note that I deliberately chose not to vote for my own game, because I don't feel right doing that.
4 pointsKuest - 4K
Burning Man
GTA4K
All three are good fun and have some replayability. I don't think I can pick an overall winner between them.
3 points4 Freedom -- technically impressive, but jolly hard (and I think mainly because of the control scheme)
TrickShot -- good fun, just needs a quick reset so I get to be doing something for more than 10% of the time I spend playing
2 pointsDriver4K -- fun, controls a bit irritating
1 pointFalcon4k -- technically good but the perspective makes it very hard to play
Cap4Hold -- interesting idea. Crashed with AIOOBE
Don't Reach The Square -- nice effects, not much depth
Little Worlds4k -- not much depth, but interesting enough that I played until I finished it
Greedy Snakes 4k -- nice twist