Top 30 groups.

Media: DownloadFull game legally distributed as digital download.1983 / 201913585 games
ScorePlayer is given a score on their performance. Often an integral part of gameplay, such as the main goal.1971 / 201810167 games
Proprietary licenseDistributed under a license that witholds and/or restricts source code & rights granted by law, usually for commercial purposes & is almost always unique per game1970 / 20199965 games
CommercialA notably commercial product despite copyrights (or lack thereof) and/or licensing agreements (or lack thereof) that many perceive as incompatible with commercial sales.1970 / 20199089 games
Available on SteamAvailable on the digital distribution (and by extension social networking service) by Valve.1987 / 20197587 games
Ubuntu LinuxComes with/Installs very simply on Ubuntu.1991 / 20196704 games
Extra livesPlayer character has multiple "lives".1975 / 20186148 games
IndieDeveloped without financial backing from large companies or non-private investors. Shares similar design philosophies as art games, but on gameplay rather than artistic value. Often self-published as well.1983 / 20185409 games
Planet EarthAll or part of the story takes place on Earth of the Sol star system.1970 / 20184897 games
Available on Itch.io1983 / 20184860 games
WalkingPlayer can or must move about on foot, regardless of speed.1980 / 20183797 games
Console ClassixAvailable to play at Console Classix1977 / 20113502 games
NaturalisticNot necessarily realistic. Has nothing overtly fantastic, be it magical, paranormal, psychic, mystic, super powers, technomagic, nor magical technology.1970 / 20183486 games
GridUses a grid of any shape or type.1974 / 20183098 games
MAMEAn Arcade games emulator available for almost any platform. (clones and bootlegs are merged to the parent)1971 / 20082952 games
MagicFeatures anything definitely magical or strange mystic powers.1974 / 20182947 games
Female protagonistPlayer controls apparently female character.1974 / 20182750 games (12 characters)
MonstersIncludes any kind of creatures with terrifying or otherwise horribly deformed/repulsive (monstrous) appearance, regardless if their personality matches this. Commonly assumed to be mindless savages.1974 / 20182720 games
Interactive fictionA type of adventure game where the game world and player input is described using text. Such as "You are in a hallway. There is a key on the floor", ">get key", ">use silver key on door", ">turn valve", ">say hello", etc..1975 / 20182511 games
FutureSet in the future, as seen from the point of the game's release.1971 / 20182466 games
Mêlée weaponsPlayer can use non-projectile weapons which require both the user and the target to be in direct contact with them.1980 / 20182412 games
Word inputPlayer controls the game or part of the game by typing in full or partial sentences that are interpreted as commands.1972 / 20172341 games
Rectangular gridUses an ordinary grid of 4 sided convex shapes (rectangles, squares, etc.).1974 / 20182327 games
FirearmsPlayer can use projectile weapons that use a controlled explosion to propel a bullet at the intended target.1975 / 20182296 games
Classic Mac OSGames for Mac OS 9 or earlier.1984 / 20142240 games
Boss battlesIncludes one or more battles with enemies who are significantly more powerful than anything else thrown at the player prior, usually found at the end of a level.1980 / 20182185 games
Traditional gameVideo game adaptation of a traditional game. Or uses real traditional gaming materials.1974 / 20182174 games
Media: CD-ROMComes on one or more CD-ROMs (Only for systems that allow more than one type of media).1984 / 20162124 games
Time limitImposes a time limit on either the whole game or for each level.1971 / 20172003 games
First-person shooterA shooter from first-person perspective with fairly free movement (not locked to a grid, rails, or autoscrolling) and view direction. As such, despite the name, simply being from 1st person perspective and being a shooter is not enough to qualify.1973 / 20191946 games