I tried a bunch of bundle fodder I'd been sitting on today:
Poof - Crashed on launch. Would not recommend.
Muffin Knight - Like Super Crate Box--almost exactly, down to the powerups--but with more forgiving and slow gameplay and level ups and upgrades and all the typical 2014 gameplay stuff. I'd recommend Super Crate Box over it.
8-Bit Boy - Platformer which despite the name is not inspired by NES platformers, but by DOS/Amiga platformers. Big, bright graphics. Terrible, sloppy controls. Level design meh. Found more frustrating than challenging. Music grated my nerves. Would not recommend. Looked like maybe 50 short-ish stages, I got to World 3 Level 4 (out of 5 worlds).
Meltdown - Online multiplayer isometric Smash TV but with slower and more methodical, more forgiving gameplay. 30 Missions, level ups and prestiges and unlocks up the wazoo. Played 8 missions, seemed pretty samey but fun in a mind-numbing kind of way. Multiplayer was pretty laggy and with no friendly fire or competition over loot drops or anything it felt more like two people playing their own games at the same time. Looks great, though, great style, and fun dubstep music. This is a meh-to-maybe.
Boson X - Infinite runner with a behind-the-shoulder camera angle, level-based progression, trippy primitive smooth graphics and an Amplitude/Frequency/Tempest style lane switching system. I liked this a lot, very polished, looked and felt great... but 18 levels and I finished 7 in the 40 minutes I played, so if you're not going for score attack I think this will be short (basically you build up a gauge to 100% to finish a level, but you keep playing until you die, so you can build higher and higher gauges). I definitely recommend this if you like Pivvot, Super Hexagon, Canabalt, that one Unicorn game from Adult Swim, etc. Really can't overstate how nice this one looked.
Canyon Capers - Another Amiga-inspired platformer, apparently a remake of an earlier game. Also has messy, floaty jumping physics and dull level design. The weirdest thing is that when you jump, your character flips, so you're constantly looking at this distracting rotating sprite. The levels aren't really play-until-the-end levels, they're sort of self-constained mazes and you have to get all the items in the maze to be able to go through the exit gate. Looked like maybe 30 stages, I got about 10 of the way through. Would not recommend.
Potatoman Seeks the Troof - This is basically a flat sidescroller where you have a guy that can jump and you have to avoid enemies and obstacles. It's not a platformer because there's no platforming, but you do jump. It's based on frustration platformers, so expect enemies to randomly break pattern or do something nonsense to kill you. There's a lot of text but it's mostly pseudo-philosophical nonsense. I found this frustrating and definitely like it felt it was funnier than it was. Won't run for me on Windows but ran fine on Mac. Would not recommend.
And some non-bundle fodder from yesterday
The Counting Kingdom - This is a neat little puzzle game. You have a 5-by-5 grid with your castle on the left hand side. Monsters stream in from the right. Each monster has a number on its body. You have cards with numbers. You need to select a continuous line of monsters that sums to one of your cards--so like a 1, a 2, and a 1 monster can be used with a 4 card. You can combine 2 cards to get the sum. You can discard a card to draw (but if you discard, the monsters advance on your castle). Some squares on the grid double a monster's number when they step on it. Every time you kill monsters more spawn, but you can't know where they'll spawn or what numbers they'll have. Near the end of the game you've got cards like 50 and you're trying to do... 7+8+4+11+17+2+4+6 in your head and trying to find the right number. Looks fantastic with a great, vibrant PopCap-style presentation. One problem... it's clearly made for people with the math skills of maybe a Grade 2-Grade 4 level (ages 7-9 or so). It's very easy and very short. So, uh, parents of SteamGAF, consider this for your young children?