Gex was a platformer franchise featuring a gecko who entered TV and movie themed worlds. The first entry, the simply titled Gex, was a 2D platformer for the 3DO, and later the Playstation 1 and Sega Saturn. The next installment switched to 3D platforming, with Gex: Enter the Gecko. It was released for the PS1 and N64. The N64 port is noted for cutting out several levels due to space constraints and lacking cutscenes the game previously had (though to be fair, it featured one level that the PS1 version lacked). The final entry, Gex 3: Deep Cover Gecko, was again released on the PS1 and N64 (which did not have any of the FMVs).Despite being fairly successful and its developer continuing most of its other franchises from the era into the next (and expectations that it would make the leap), the franchise ended with the release of the last game in 1999 and has not resurfaced. It is also not remembered widely, unlike many other PS1-specific franchises; the creators of Official Playstation Magazine even expressed shock and embarrassment that they had put the third game on their cover!
Anvil On Head: A stage hazard for the Toon TV stages in Gex: Enter The Gecko and the New Toon Land stage in the original Gex. Hazards include anvils, safes, weights, fat ladies, and kitchen sinks. Also lampshaded by Gex:
Gex: "What is it with cartoons and anvils?"
Auto-Scrolling Level: The "Congo Chaos" level. Stepping on a switch early in the level activates the autoscrolling. It stops at the end of the level (and you can backtrack if you want to).
Crosshair Aware: Done beautifully on Gex: Enter the Gecko with the final boss, Rez. After a while, the perspective switches to Rez's eyes (while you still control Gex) with Rez firing rockets after he locks on to you.
Screw the Rules, I Have Money!: Gex's family became rich after great-uncle Charlie (the original model for Izod) died and left them over $20 billion. The family bought houses, cars, judges, politicians, 51% ownership of NASA, and Australia (since the kids wanted to go there).
Spring Jump: Gex's trademark vertical mobility option. There are also jump pads in quite a few levels.
Suck E. Cheese's: Gex's mother converted Mission Control into a theme restaurant, Space Monkeys, featuring robotic dancing space chimps.
Super Not-Drowning Skills: Played straight in the first game, where Gex swims Mario-style, pressing the jump button to float upwards and not needing any oxygen. In Enter The Gecko, he doesn't need oxygen in the N64 version's titanic level. Averted in Deep Cover Gecko, where Gex has an Oxygen Meter.
What Could Have Been: The first game was originally going to be about a Hollywood stunt-gecko who must save his studio from financial trouble.
Then, after they decided on the current premise, each world was going to have three parts. For example, the first part of the Horror world would be the cemetery, the second part a haunted mansion, and the third part would be Mode 2 (a la Rail Chase). You can read more about it here.
An earlier premise of the game is Gex is living in a gecko village island when a portal opens above them. Swarm of flying demons with pitchforks abducted them all. Gex is left behind, and he must rescue them.
Circling Stars: Happens when you jump straight into a wall (which doesn't do any damage) or get knocked down from an enemy hit.
Cool Shades: Puts on a pair during the intro en route to the Media Dimension.
Collection Sidequest: This is how the bonus levels play out in Gex: Enter The Gecko. In the standard levels, it also has you collecting thematic items which change and grant you a 1-UP after getting 30 and 40. Collecting 120 (50 after the second, permanent item change) gets you a silver remote, used to unlock secret levels. The collectibles are:
Hammerspace: In the Toon TV world, the dancing flowers can pull hammers out from behind their backs to attack you. Afterwards, they just hide the hammer behind their backs again, seemingly into thin air.
Kaizo Trap: If you collect a remote and die before landing on the ground (falling off a cliff, run out of air, etc.) the game will act as if you had died, but will still register that you obtained the remote. Not particularly useful, unless you really don't want to go back to the Hub World, but not very frustrating either since the remote collection still counts.
Kill It with Fire: In Gex: Enter The Gecko, creating a circle of fire around an enemy while under the effects of the fire-fly grants an instant kill via rising tower of flame. Notably, this is the only way, asides from its ice counterpart, to dispose of the corpses of zombies (which is not necessary or useful in anyway but is still very cool).
Kill It with Ice: Functionally identical to the fire-fly, the ice-fly allows Gex to also instakill enemies.
Laser Blade: Gex plays with a lightsaber in his idle animation in the Rocket Channel space levels in Gex: Enter The Gecko, complete with sound effects. Sadly, he cannot use it in combat. They are also used by certain enemies in the same level.
Last-Second Word Swap: The title of the second non-bonus Rocket Channel level is name "Pain In The Asteroids".
Loin Cloth: Gex dons one in the Pre-History channel levels.
Luke, I Am Your Father: Rez tries pulling this at the end, though Gex's real father was killed in a rocket explosion. The novelization tries to reconcile this, revealing that Gex's father became Rez as as a result of the explosion.
Sequence Breaking: It is possible to skip a large portion of the "Fine Tooning" Toon TV level by jumping on top of a domino and jump kicking past a gap, as shown here. Normally, you would need to follow the moat river to another section of the level to find a boat which acts as a platform, as shown here.
Sequel Number Snarl: The previous game in the series is simply called "Gex", and the next game is Gex 3: Deep Cover Gecko...but this game isn't called Gex 2, leading to confusion for those who missed out on the original (e.g. N64 owners.)
Anti-Frustration Feature: Levels where you can fall down and are forced to redo a long segment come with mini- checkpoints to go back to where you fell (The "Cutcheese Island"'s platforming segment and the Fairytales TV's beanstalk).
Messy Pig: The reason they appear in the "Mythstories" network.
Everything Trying to Kill You: Now we have Christmas Elves, taxidermied bears, billard balls, fleas, man-eating lawnchairs, exotic blunderbuss-wielding stereotypically British hunters, mummies, Anubis clones, faces coming out of walls, giant locusts, giant spiders, nasty drill sergeants...and that's barely half-way through the game.
Killer Robot: An enemy type fought in the Anime Channel level: "When Sushi Goes Bad."
Mad Bomber: One mission in the Superhero Show level has you defeating the mad bomber.
Masked Luchador: Gex dresses as one for the first boss fight versus a wrestler.
The Maze: A mild example with the hedge maze in "Clueless In Seattle".
Medley: The music to "Totally Scrooged" is a medley of various Christmas songs: "Jingle Bells", "Angels We Have Heard on High", and "Frosty the Snowman" (played in a minor key to give it a sinister sound).
Mummy: An enemy in the "Holy Moses!" level. Can turn into a tornado, oddly enough.
Not Quite Flight: Gex can glide when he wears an outfit equipped with a cape. This includes the vampire costume and the red riding hood costume. He can also get this ability in his Power Suit in the Anime Channel level as well as from a superpower gained from a super power booth.