With Indie Nation now all but defunct, I have to apologize: I haven't been pimping out great indie games as frequently as I used to.
While games like Machinarium, Canabalt, Gridrunner Revolution and AaaaaAAaaaAAAaaAAAAaAAAA!!!: A Reckless Disregard for Gravity should already be on your radar, I'd like to take some time to point out a few indie games that I personally failed to call attention to during 2009. This list is by no means complete, of course.
Hit the jump for more.
SYNSO: Squid Harder
Wait -- it's not a shitty Geometry Wars clone. Nor is it a shitty Jeff Minter clone. Even though Squid Yes! Not So Octopus: Squid Harder has sorta-glowy, sorta-retro graphics and bases much of its gameplay around making sense of visual noise, it's very much its own thing.
It's a pretty basic arena shooter at heart, but the fact that you can only fire in the direction you're moving -- and the fact that your weapons' spread can destroy practically everything on screen if you're pointed in anywhere near the right direction -- makes SYNSO less about accurately aiming and more about dodging your enemies, avoiding their spawns, and deciding whether it's worth moving directly toward baddies in order to get a better shot at them. It's not too often that an arena shooter incentivizes charging straight toward your enemies, but that's what makes Squid Harder so addictive. That, and the fact that (unlike in the first SYNSO) the game is broken down into digestible 2-4 minute levels.
Saira

From Nifflas, the creator of Knytt, comes further proof that he understands exploration-based platformers like nobody else in the world. Saira is probably Nifflas' biggest game yet, but it never feels overwhelming: there's none of that Metroid Prime-esque "go to a previous solar system you thought you were done with to grab a powerup, then trek all the way back here to use it" bullshit.
There are at least a dozen individual worlds in Saira, but you can access them in any order you want, their puzzles don't require any significant backtracking, and once you're done with them, you never have to return to them again. Not to mention that no two worlds are the same: one is nothing but an extended time trial, one is full of programming puzzles, and so on. If you loved the pure, unfiltered exploration gameplay of Knytt, you may be a bit disappointed that Saira is full of these little digressions and puzzles. If you're up for them, though, you may find Saira to be Nifflas' most enjoyable work yet (awkwardly-delivered story be damned).
Irukandji

There's only one level to this little slice of bullet hell, but you're rewarded with a new ship every time you beat it. The level is interesting enough, and the ships are so different from one another (one can only fire at 45-degree angles, for instance) that you may find yourself working to unlock everything the game has to offer. By far my favorite of Charlie Knight's games.
Skullpogo

The PC version is free, but the iPhone app is what you want. Next to Canabalt and Zen Bound, Skullpogo is one of the single best iPhone games out there. Period.
You play a skeleton dude with a pogo stick. Your goal: to rack up points by combo-squashing bats, zombies, and vampiric pigs. The game's minimal controls (tilt the iPhone to move, adjust the height of your bounce with a touch of a single onscreen button) keep things simple, the premise is refreshingly unusual, and the fast pace of the levels make it perfect for short play sessions.
Blue Lacuna

I'll be honest: I stopped playing this epic work of IF after about forty-five minutes, once it began to move away from letting the player experience a compelling, remarkably well-written story (a la Photopia) and started throwing in obligatory engineering and exploration puzzles. Still, the prologue is incredible, and I can't say for certain that all the lever-pulling, map-memorizing stuff is anything more than a quick digression. If you've got some tolerance for stereotypical IF puzzles and love a well-written piece of fiction, Blue Lacuna may be worth checking out.
This is the Only Level

It's not just a cute joke -- This is the Only Level is a damned clever bit of meta-gameplay. I'm tempted to liken it to the Karoshi series, but that doesn't quite do the game justice (as great as the Karoshi series is); there's something weirdly transcendent about the fact that after a few minutes of play, you'll have traversed this one level enough times that it becomes hard-coded into your muscle memory. When the game completely blanks out the screen and asks you to find your way to the exit, you may be amazed by how easily you can do so.
Queens

Gameplay-wise, it's just a punishing, intentionally unfair platformer. Narratively, Queens is far more subtly effective than it really has any right to be. No dialogue, no cut scenes, no environmental narrative; there is only the Queen, the King who throws her into the dungeon, and the dangers in that dungeon. Every single time you die, the game takes that death and turns it into a part of the narrative. Where most games would simply have you respawn as the exact same character and ask you to try again, Queens keeps the fourth wall intact and spawns you as a new Queen with a different name and appearance.
Functionally, these other queens are just gussied-up respawns; narratively, they imbue the game with an odd dramatic weight. You want your character to survive not just because you wanna beat the game, but because you don't want the particular queen you're controlling to permanently die; you want to reach the end of the dungeon not just for the sake of completion, but to wreak vengeance on the bastard who killed all of your previous queens. Queens isn't a tearjerker or anything, but its minimalist story is awfully damn clever.
Merry Gear Solid 2

Though a bit too high-consequence for my tastes (get spotted once and you've gotta restart the entire room), this sequel to Merry Gear Solid positively drips with charm. I defy you not to at least grin once you hear the "game over" music.
Zen Bound

WHY THE HELL IS TYING UP WOODEN SCULPTURES WITH VIRTUAL ROPE SO FUCKING SATISFYING
Self-Destruct

While this shmup from Terry Cavanagh may not seem like much at first -- all you're doing is either shooting, dodging, or absorbing enemy bullets -- its brisk pacing, randomized enemy waves and definite endpoint will keep you coming back for multiple replays. I still haven't beaten the damned thing yet, though.
And about a thousand others I'm sure I forgot
Do you have any to add? Hit the comments below.
It's a lot of fun, and well worth the $3.00. There's a demo too, if you want to try before you buy.
Star Guard- A minimalistic 2D platformer with simple graphics and simple gameplay. Can't say anything else until you try it.
Super Karoshi- High on funny self references, YOU BEAT STAGES BY KILLING YOURSELF, quirky music, and a cool ending(s)?
I've come to play more Indie games than I can possibly imagine in the last month alone, and I see the Indie scene and it's games in a whole new way. Why did you stop with Indie Nation anyway?
http://marketplace.xbox.com/en-US/games/media/66acd000-77fe-1000-9115-d80258550355/
Tuper Tario Tros- Mario + Tetris = This game
- Backworld. Worth your time. Just download it.
- Devil's Tuning Fork from the Student Showcase is amazing. I'd compare it to Portal in terms of the intended feelings of disorientation and slow-burnt but substantial understanding if I knew other people actually think like that and it's not just me being weird.
- Igneous (also from the Student Showcase) is like the rooftop run from Beyond Good and Evil, except that comparison doesn't work because no-one played Beyond Good and Evil, but it's good - that's a good thing.
- Figure 8 is a very interesting game. Not sure what to make of it, but certainly worth your time to decide.
- Spectre is like what a Wii casual minigame bundle would be like if that kind of thing was genuinely interesting.
- And keep an eye on the Dear Esther remake, it's looking gorgeous.
It's a real shame the game isn't procedurally generated, because it would make the game 10x better.
Start doing indie nations again. Maybe replace podtoid with them, as podtoid is shit now.
- Theo
Don't do Indie Nations. Just post links to tigsource.com
Grow a fucking memory.
...my douché
http://tigsource.com/articles/2009/07/27/a-rant-about-videogaming-by-a-man-who-videogames
show derek yu some love baby
Enough said.
http://www.destructoid.com/indie-nation-45-gravity-bone-116838.phtml
Made by six guys in the Netherlands, It's a simple online FPS with addicting modes and a large community. It also features the best level editor ever, and even online level editing. (known as Co-op mode)
Almost completely insubstantial yet oddly compelling. I'm not going to talk about it because it is predicated on discovery and creativity, but give it a go.
Also, my contribution are the Vs. games:
Megaman Vs. Metroid
http://www.newgrounds.com/portal/view/124070
Megaman Vs. Ghosts N' Goblins
http://www.brokenfunction.com/content/megaman-vs-ghostsngoblins/
Megaman put into Metroid/GNG. Great stuff.
It makes me sad that Indie Nation is gone.
So awesome in fact I put it on my USB so I can play it anywhere. Also on my USB is counter-strike 1.6, Merry gear solid, and No More Plumbers which I believe someone here posted on.
Also, i guess it's an indie game but Genetos for PC is a fantastic schmup that has an evolution feature similar to Space Invaders on iphone. You start off playing space invaders then eventually end up playing a gradius shooter.
http://www.youtube.com/watch?v=zMOV-4aCofE
Beautiful game that challenges your imagination more than your skill as a gamer, infinite length (with the addition of a level editor and large fanbase) and a soundtrack that would calm even Mr. T