http://liliputing.com/2015/02/raspberry-pi-2-can-run-windows-10-ubuntu-core.html\
Raspberry Pi 2 can run Windows 10, Ubuntu Core (and more) You vaguely remember the Raspberry Pi from two-three years ago when it made a big splash as being a real functional computer for school kids to "learn computer programming" upon while in early grade school.
For $35 each kid could have one to torture to his heart's content, sorta like that little toot a tone Tonette flute they gave you so you could get exposed to music. Millions and Hundreds of Millions have been put in the hands of school kiddies and indeed they did lap them up and turn them into remarkable robotics projects which have been haunting the HS science fairs ever since.
Broadcom finally quit making the chipset (ARM v6 was like way way out of date) in any real volume and replaced it with a "more current" ARM v7 chipset swinging four A7 LITTLE cores and a full GIG of systems memory (with Broadcom really intending to overspec the little thing to future proof it a little bit so they could continue to run it for a while).
Price was the same, size was the same, ball connect solder pattern was the same, but it required an update on the Raspberry Pi's guts as extra memory was needed and the difference between the v6 and v7 generations was somewhat pervasive on all the connected bits and pieces and ALL THE SOFTWARE HAD TO BE UPGRADED AS WELL.
Ah, the software mass originally had to be rewritten "down" for the then obsolete v6 processor, so now the software needed to be moved back up to v7 which is still the main mass of stuff these days.
A quad core A7 with a gig of memory is enough grunt to run Win 10 embedded, and it is plenty enough to run current full versions of Android 4.4.4 or Ubuntu or Linux Mint at a respectable rate.
It is more processor and memory than a XP box had when it was new.
It is equal to or better than what came on the early Win 7 machines.
Broadcom and the Raspberry Pi folks have put out a LOT OF COMPUTING POWER into the eager hands of them little kiddies -- let's see what they go do with it.
$35 sure buys a lot of computer these days ..... the little computer comes with Raspian, which is a full OS, some games and has the common Office type softwares -- all for $35.
Once again, you are teaching kids Linux from the very beginning. Then they grow up and get a Chrome laptop when they get a bit older .....
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What games can you run on the old Pi?
Better way of saying that is what systems can you emulate? Answer: lots of them:
Amiga (UAE4All)
Apple II (LinApple)
Apple Macintosh (Basilisk II)
Armstrad CPC (CPC4RPi)
Arcade (PiFBA, Mame4All-RPi)
Atari 800
Atari 2600 (RetroArch)
Atari ST/STE/TT/Falcon
C64 (VICE)
CaveStory (NXEngine)
Doom (RetroArch)
Duke Nukem 3D1
Final Burn Alpha (RetroArch)
Game Boy Advance (gpSP)
Game Boy Color (RetroArch)
Game Gear (Osmose)
Intellivision (RetroArch)
MAME (RetroArch)
MAME (AdvMAME)
NeoGeo (GnGeo)
NeoGeo (Genesis-GX, RetroArch)
Sega Master System (Osmose)
Sega Megadrive/Genesis (DGEN, Picodrive)
Sega Mega-CD (Picodrive)
Sega 32X (Picodrive)
Nintendo Entertainment System (RetroArch)
N64 (Mupen64Plus-RPi)
PC Engine / Turbo Grafx 16 (RetroArch)
Playstation 1 (RetroArch)
ScummVM
Super Nintendo Entertainment System (RetroArch, PiSNES, SNES-Rpi)
Sinclair ZX Spectrum (Fuse)
PC / x86 (rpix86)
Z Machine emulator (Frotz)
What can you run on the new Pi? Answer -- lots & lots more of much more modern stuff
Or if you want the shortest answer ..... Steam for Linux and most all Android games