#1 Wasteland 2 ($15) - I love post-apocalyptic RPGs because of Fallout, and I really liked Wasteland 2 too. Now that the Director's Cut is coming, I'm eager to see how they've improved the already awesome game. It suffered from bugs when it launched, but I'm guessing most of them have been fixed by now anyway.
#2 Project Eternity ($20) - A modern classic that's on the same level with Baldur's Gate, etc. The main story is a bit confusing; other than that, great game.
#3 Shadowrun: Hong Kong ($15) - Good game, but not as good as Shadowrun: Dragonfall. The story isn't as interesting, but that's about the only thing it suffers from.
#4 Xenonauts ($20) - Pretty good, although I prefer XCOM. Started to get a bit repetitive near the end, but overall I had a good time nevertheless.
#5 Carmageddon: Reincarnation ($25) - I love Carmageddon, thus I enjoyed this game too. It did have some technical difficulties though, such as framerate drops. The AI is also quite bad.
#6 Make Leisure Suit Larry come again! ($15) - Graphical overhaul, and that's about it. It's basically still the same game, and that's fine because that's what I wanted anyway. The voice recording quality was less than stellar at some points.
#7 Dead State: The Zombie Survival RPG ($15) - Dragged on and on and on. Incredibly repetitive. Was incredibly buggy in release. I had huge expectations for this game, more than any other KS I've backed, and I was severely let down.
#8 Neverending Nightmares ($10) - Dull, short and failed to scare.
#9 Haunts: The Manse Macabre ($5) - Was never completed, the developer ran out of money.

KickStarters I didn't back but I wish I had (because they were soooo good when I finally got to play them...or at least worthy enough to deserve a pledge):
- Shadowrun Returns
- FTL
- Divinity: Original Sin
- Hand of Fate
- Chroma Squad
- Expeditions: Conquistador
- Project Giana

I'll list only those I paid enough to get a product and actually used the product (even if only to a small extent). For example this doesn't include Shadowrun Returns, where I pledged only $1 because they didn't have a tier with Android, and later bought the Android version the moment it was available. As another example Wasteland 2 and Shadowrun Online aren't included because I haven't played them.

The following are listed in order of pledge time:

Broken Age - I didn't play the game (because my tablet isn't compatible with it) but I enjoyed the information posted during development and the documentary episodes that I watched, so consider my money well spent.

Spirit of the Century Presents: The Dinocalypse Trilogy - Some of these books were pretty enjoyable, and I feel it was good value for money.

Tex Murphy - Project Fedora - I didn't play that much (it was the end of my PC playing days), but what I played wasn't bad.

Paper Sorcerer - The Android version had some issues, and I didn't play it that much. Marginally enjoyable.

Detective Grimoire - Didn't like it that much. Okayish.

Broken Sword - the Serpent's Curse - Enjoyed it quite a bit.

Conclave - I reasonably enjoyed what I played of it, but didn't go far.

Fate Core - I enjoyed reading it. I think it's a good project, but I'm using RPG's for inspiration more than playing these days.

Back to Bed - Didn't like it that much.

Lords of Gossamer and Shadow: Diceless Role-Playing - Another nice RPG project.

The Very Hungry Cthulhupillar - Kind of a joke project, it fulfilled what I expected from it, which wasn't that much.

ALBERT EINSTEIN: TIME MASON - Enjoyable, but not great.

The Chronicles of Faro - Okayish.

Survivor - a scifi feature starring Kevin Sorbo - overpriced, but enjoyable enough that I watched it completely. I wish GOG sold such indie movies (I'm not interested in gaming documentaries).

Worlds in Peril: Be the Hero you Want to Be! - Another nice RPG project.

Backed +/-10 crowdfunding games, not all on Kickstarter, but I'm not going to back anymore as paying without a credit card is a pain in the ass and most crowdfunded games go for sale so quickly that I feel scammed for backing those projects in the first place.

So that piggy never does anything?

Yeah, I've had one like that where the base game was 10 dollars, and for a 'discount' extra ten (or fifteen if you were late) dollars you could get the deluxe edition. Now I've heard they're releasing the deluxe version with a base price of 15 dollars. So yeah. I enjoyed the game so I don't regret spending the money on it but it is quite annoying to see them setting a release price lower than what they asked for in the kickstarter.

It just runs around and looks kinda cute. But there are far more cool pets.

I bought the highest tier possible for the closed beta of Path of Exile. All it got me was a diamond kiwi bird that did jackshit other than following me, some in-game cash, a t-shirt and a poster of the island map.

Was the worst waste of money I've ever done.

Too bad, I was hoping it'd get all buff and boar-ish.

Yeah, Kickstarter typically isn't great value for games, unless you're the type to buy games near release. If you pledge high for a physical tier though you can often get nice exclusive stuff.