Sky pirates
- game about highjacking santa's sleigh mid-flight
- thieves who bungie-jump from hot air balloons
- using flying drones to physically access servers to steal software
Teleportation
- portal-like
- game about managing travel, airport-like facility with teleporters
- racing game with portals as shortcuts, need to set one portal on first lap, other on second, use them on third
Tunnels
- dig dug remake
- exploring abandoned subways/sewers
- surfing/racing through a sewer?
Space is limited
- play as a Tron-style program that has to delete junk files, avoid accidentally deleting important ones
- a game where the level gets smaller
- managing limited resources on a spaceship
You are the power source
- endless runner on a treadmill, hampster wheel, to generate power
- game about manipulating politics (political power)
- Matrix referece?
Overgrown
- a game about killing giants/titans
- lawn-mowing simulator
- a game where you have to collect a lot of food, and eventually need to roll instead of walk
Crossroads
- traffic management game
- small metroidvania with central area
- frogger style
- race game where every light is red and you have to run them, avoid traffic
Repair
- robot needs to repair itself to regain abilities
- pit-stop simulator
- puzzle game about IT worker rapidly fixing coworkers computers, Warioware sytle
Branching out
- social/career networking simulator
- game about trees?
Momentum
- bus with a bomb on it
- vehicle with no breaks
- ski jump
- build speed to launch player into destructible level
A single resource
- steampunk survival, water is used for drinking and energy
- research game were you have to find answers to trivia using only wikipedia
Strength in numbers
- pikmin style, recruit animals to help you
- realtime strategy were you depend on cannon fodder
Decay
- of course, Zombies
- urban decay, crime in the slums
Treasure Map
- any action/adventure involving treasure hunt
- you need to explore an area and mark points of interest on a map, to sell to tourists
Fill the void
- lemmings style, build a bridge of whatever before dumb creatures walk off cliff
- constantly having to feed a perpetually hungry person/monster (wendigo?)
- dating simulator, fill the void in your life
Combine
- combine two genres
- mad scientist splicing genes
- food-preparing game, pizza maybe?