Top 30 groups.

Media: DownloadFull game legally distributed as digital download.1983 / 201813274 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 game1977 / 20189525 games
ScorePlayer is given a score on their performance. Often an integral part of gameplay, such as the main goal.1971 / 20189268 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.1977 / 20188659 games
Available on SteamAvailable on the digital distribution (and by extension social networking service) by Valve.1987 / 20187223 games
Ubuntu LinuxComes with/Installs very simply on Ubuntu.1991 / 20186457 games
Extra livesPlayer character has multiple "lives".1975 / 20185751 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 / 20185358 games
Available on Itch.io1983 / 20184855 games
Planet EarthAll or part of the story takes place on Earth of the Sol star system.1975 / 20184795 games
WalkingPlayer can or must move about on foot, regardless of speed.1980 / 20183728 games
Console ClassixAvailable to play at Console Classix1977 / 20113499 games
NaturalisticNot necessarily realistic. Has nothing overtly fantastic, be it magical, paranormal, psychic, mystic, super powers, technomagic, nor magical technology.1974 / 20183011 games
MAMEAn Arcade games emulator available for almost any platform. (clones and bootlegs are merged to the parent)1971 / 20082908 games
MagicFeatures anything definitely magical or strange mystic powers.1974 / 20182890 games
GridUses a grid of any shape or type.1975 / 20172674 games
Female protagonistPlayer controls apparently female character.1974 / 20182664 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 / 20182652 games
FutureSet in the future, as seen from the point of the game's release.1971 / 20172434 games
Mêlée weaponsPlayer can use non-projectile weapons which require both the user and the target to be in direct contact with them.1980 / 20182366 games
Classic Mac OSGames for Mac OS 9 or earlier.1984 / 20142240 games
FirearmsPlayer can use projectile weapons that use a controlled explosion to propel a bullet at the intended target.1975 / 20172237 games
Word inputPlayer controls the game or part of the game by typing in full or partial sentences that are interpreted as commands.1972 / 20172151 games
Interactive fictionA type of adventure game where player types in sentences or semi-meaningful word strings to perform actions, such as "put log in fire", "get key from purse", "use silver key on door", "turn valve", "say hello", and so forth.1975 / 20172134 games
Media: CD-ROMComes on one or more CD-ROMs (Only for systems that allow more than one type of media).1984 / 20162112 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.1981 / 20172020 games
Traditional gameVideo game adaptation of a traditional game. Or uses real traditional gaming materials.1975 / 20172015 games
Rectangular gridUses an ordinary grid of 4 sided convex shapes (rectangles, squares, etc.).1975 / 20171911 games
Difficulty levelsPlayer has linear choice of game difficulty level, usually ranging from Easy to Normal to Hard.1977 / 20171910 games
68000 Series CPURuns on machines with 68000 based CPUs. Use this tag for games on platforms that can have different CPUs. For instance, Macs can use a 68k, PPC, or x86 CPU.1984 / 20111893 games