I've tested for a few games and it was almost always via PowerPak or emulator. Just easier and more cost effective to distribute multiple builds I suppose.
But I did receive a tester copy of Full Quiet which was probably 85% of the final draft. Much of the exposition and story were not in place to prevent spoiling the game for the testers.
I also have a unique Spook-o-tron cart which is ~175% of the final Kickstarter release. It contains additional glitched iterations of all of the levels. Some are very cool and playable but it does reach a point where the levels are impossible to clear. It was custom made by Beau and is my favorite test build just prior to release.
Dude, it was a great day. Rode up Peak to Peak Highway in the mountains, stopped by Red Rocks, wound up at the biker bar and played some pinball. Pretty much a perfect day.
Metroid II is pretty good, but I had to go with a 5 because I wouldn't go out of my way to play it again. It's definitely worth playing but really my least favorite of the series.
Samus Returns, on the other hand is great. And the best 3D Metroid by far.
Technically a 5 but I do think the whole trilogy is pretty great. But you have to make a ton of time for these movies particularly because you have to watch the extended versions. Ridiculous.
I'm also not an Elijah Wood fan. But Mikey from the Goonies saves the day so it evens out