This is a list of available fantasy consoles/computers. Including softwares which simulate virtual hardwares, with limited functionality. And always encourage creating and sharing tiny retro games and programs with built-in languages and tools.

FC	Language	Price & License	Platform (Editing; Playing)	Display
atto by James Livesey	BASIC	Free, MIT	Browser	640x480 (4:3)
BASIC8 by Tony Wang	BASIC	$14.99	Windows, macOS, Linux; Browser	160x128 (1.25:1)
Bitmelo by David Byers	JavaScript	Free	Windows, Browser	Configurable
Bitsy by Adam Le Doux	Instructions	Free, MIT	Browser	16x16 (1:1) 1bit sprites (8x8 per sprite)
cel7 by rxi	fe (lisp-like)	NYOP	Windows, Linux	Configurable
Click4 by Josef Patoprsty	ASM	Free, MIT	Windows, macOS, Linux	64x64 (1:1)
CToy by Anaël Seghezzi	C	Free, zlib	Windows, macOS, Linux	128x128 (1:1)
DRAK-0 by Drew Wibbenmeyer	ChaiScript, LuaJIT (coming soon)	NYOP, MIT	Windows	320x240 (4:3)
ESP LGE by Igor(corax89)	C like	Free, GPLv3	Browser, custom handheld	128x128 (1:1)
Fancade by Martin Magni	Visual Scripting	F2P	iOS, Android, Browser	Voxel
FAZIC by Michał Kalbarczyk	BASIC	Free	Browser	320x240 (4:3)
IBNIZ by viznut	Instructions	Free, zlib	Windows, Linux	256x256 (1:1)
Leikr by Torbuntu	(Official) Groovy, (unofficial) Java, Kotlin	Free, Apache	Linux, Raspberry Pi, GameShell, Windows	240x160 (3:2)
LIKO-12 by RamiLego4Game	Lua	NYOP, MIT	Windows, macOS, Linux, Android	192x128 (3:2)
LowRes NX (LowRes Coder) by Timo Kloss	BASIC	Free, LGPL3	Windows, macOS, Linux, iOS	160x128 (1:25.1)
LuaG Console by Vulcalien	Lua	Free, GPLv3	Windows, Linux	160x160 (1:1)
luchok by Roman "shinkarom" Shynkarenko	Lua	Free, GNU GPL 3	Linux	64x32 (2:1)
MakeCode Arcade by Microsoft	Blocks, JavaScript, TypeScript	Free, MIT	Browser; Raspberry Pi 0, custom handhelds	160x120 (4:3)
MegaZeux by Alexis Janson	Robotic	Free, GPLv2	Windows, macOS, Linux, Browser, ports	80x25 characters, Configurable
Micro16 by bitblitter	BASIC	Free	Windows	80x30 character mode, 640x480 (4:3) 1bit, 320x240 (4:3) 8bit
MicroW8 by exoticorn	CurlyWas	Free, Unlicense	Browser; Windows, macOS, Linux	320x240 (4:3) 8bit
Mini Micro by Joe Strout	MiniScript	NYOP	Windows, macOS, Linux, Browser	960x640 (3:2), 8 layers
nano Jammer by Casual Effects	nano	Free, BSD	Browser	64x64 (1:1)
Nibble by Nibble Team	Lua	Free, GPLv3	Windows, macOS, Linux	400x240 (1.67:1) 24bit/7bit
Octo (CHIP-8) by John Earnest	ASM	Free, MIT	Browser	128x64 (2:1) 2bit
OK64 by LemonSpawn	Turbo Rascal	Free, GPLv3	Windows, macOS, Linux	256x256 (1:1) 8bit
Phosphor by Marc Lepage	Lua	Free, MIT	Browser	192x128 (3:2)
PICO-8 by Lexaloffle	Lua	$14.99	Windows, macOS, Linux, Raspbery Pi; Browser	128x128 (1:1) 4bit
Pix64 by ZappedCow	PNG	NYOP	Windows, Linux	64x64 (1:1)
Pixel Vision 8 by Pixel Vision 8	Lua	Free, MS-PL	Windows, macOS, Linux	256x240 (1.07:1)
PQ93 by pennie	MoonScript	Free	Windows	160x144 (1.11:1) 4bit
Prism-384 by Grapefruitopia Industries	JavaScript	$5	Windows, macOS, Linux, Raspberry Pi	384x216 (16:9)
PuzzleScript, DungeonScript by Stephen Lavelle	Instructions	Free, MIT	Browser	Configurable, (DungeonScript) Voxel
PX8 by hallucino	Lua, Python	NYOP, MIT	Windows, macOS, Linux	Configurable
Pyxel by Takashi Kitao	Python	Free, MIT	Windows, macOS, Linux	256x256 (1:1)
quadplay by Casual Effects	PyxlScript	Free, LGPL3	Windows, macOS, Linux; Browser	384x224 (1.71:1)
Raccoon by Lutopia & Linheha	JavaScript	Free, Unlicense	Browser	128x128 (1:1)
Riko4 by Bryan	Lua	Free, MIT	Windows, macOS, Linux	280x160 (1.75:1)
SCRIPT-8 by Gabriel Florit	JavaScript	Free, MIT	Browser	128x128 (1:1)
SmileBASIC by SmileBoom	BASIC	$9.99, $24.99	3DS, NS	320x240 (4:3), 400x240 (1.67:1)
TIC-80 by Vadim Grigoruk	Lua, MoonScript, JavaScript, Fennel, Wren, Squirrel	Free, $5 (Pro), MIT	Windows, macOS, Linux, Android, 3DS, Browser	240x136 (1.76:1)
Varvara by Hundred Rabbits	Uxntal (forth-like)	Free, MIT	Windows, macOS, Linux, NDS, GBA, Playdate, etc	Configurable 2bit
Vircon32 by Carra	C, Assembly	Free, BSD	Windows	640x360 (16:9) 32bit
Voxatron by Lexaloffle	micro-scripting	$19.99	Windows, macOS, Linux	Voxel
WASM-4 by Bruno Garcia	Any WebAssembly language: C/C++, Rust, Go, AssemblyScript	Free, MIT	Windows, macOS, Linux; Browser	160x160 (1:1) 2bit
yuki-js by Nik Coughlin	JavaScript (subset)	Free, MIT	Browser	Configurable
ZZT by Potomac Computer Systems	ZZT-OOP	Free, MIT	DOS, ports	80x25 characters

FC	Language	Price & License	Platform (Editing; Playing)	Display
1Bit-Wonder by Brastin	Instructions	Free	Windows, Linux	225x125 (1.8:1)
4BOD by Puarsliburf games	ASM	Free	Windows, Browser	16x16 (1:1)
CHROMA-60 by Arkia	ASM	Free	Windows, Linux	240x135 (16:9)
DX8 by Robin Southern	ASM	Free, MIT	Windows	320x256 (1.25:1)
ECoS by MLJWare	Lua	NYOP	Windows, macOS, Linux	128x128 (1:1)
Marmmodore-1K by Felipe Alfonso	ASM	Free	Browser	16x16 (1:1)
VectorBoy by David Jalbert	Lua	NYOP	Windows	Vector
VVpet by Gardrek	Lua	Free, ?	Löve	64x64x2, 128x128x4, Configurable

• CHIP-8
• Retired ones

• Ordered by: alphabet.
• Language: Mean built-in language(s) for end users, not the language in which it was created.
• NYOP: Name Your Own Price.

People find it difficult to search for this kind of software to play with, so the definition is relaxed for choosing available consoles. However, it's fairly simple to tell if one is not a fantasy console/computer:

1. Hardware such as RaspberryPi and Gamebuino are not
2. Emulators of real hardware (eg. NES, C64, DOSBox) are not
3. Generic graphics libraries and game engines are not
4. Programming IDEs and editors are not
5. Minecraft is not

As things keep evolving, feel free to update this list, or correct any mistakes. Pull requests are welcome.