Amazing Animals aka Henry’s Amazing Animals (Videos, 1996-1999)

You can watch it here.

Grizzly (Classic Mac, Adam Winiecki, 1995)

You can download Grizzly 1.3.1 here or here (click SHOW ALL under DOWNLOAD OPTIONS; don't download the version starting with ._ as it is empty), and run it by following these instructions:

Barbarian (DOS, SiEn Art, 1996)

You can play it in your browser here. Controls include arrows, Ctrl and Alt. The intro plays slow but you can skip it by pressing Esc (twice if the game has captured the mouse cursor).

What's Down That Drain (Video, 2001)

You can watch this US military pollution prevention video here.

Goosebumps: Attack of the Mutant (Windows, BlueSky Software, 1997)

You can download it here, or download it packaged to run on modern versions of Windows here.

Meat Gone Bad (Classic Mac, Michael Weyandt, ~1994)

You can download it here as meat_gone_bad_f.zip, but don't open it. Instead, drag the .zip file onto the emulated desktop here, then open The Outside World, then Downloads, and open the folder you find, then use the scrollbars to find the game folder.

Rodney’s Wonder Window (Windows, Rodney Alan Greenblat, 1992)

From the creator of Parappa the Rapper and Um Jammer Lammy. You can download it here, or download it pre-packaged to run on modern versions of Windows here.

Prince Interactive (Windows, Graphix Zone, 1994)

You can download it here (click 'SHOW ALL'), or download it pre-configured to run on modern versions of Windows here.

You can read articles about it here, here and here.

Assault Trooper (DOS, Juha Kauppinen, 1997)

You can play it in your browser here.

Cubic Limit (Video, Manfred Mohr, 1973-1974)

You can watch this early CGI short film here.

Gadget: Invention, Travel & Adventure/Past as Future (Windows, Synergy, 1993/1997)

You can download both versions of this bizarre CD-ROM adventure game, along with the OST, the artbook, and the super-obscure 1995 game Four-Sight by the same developers, all pre-configured to work on modern versions of Windows, here.

You can digitally borrow the tie-in novel, written by Marc Laidlaw, here.

History of Computer Graphics (Video, Sonja Ellingson, 1972)

You can watch it in your browser here.

Mimi & the Mites (DOS, Unobstructed Reason Corporation, 1995)

You can play it in your browser here.

Note: this is the full version - the preview imagine is of the freeware version and is included erroneously.

Ray Bradbury's The Martian Chronicles Adventure Game (Windows 3.1/Classic Mac, 1995)

You can view the boxart here, and follow these ‘fun’ instructions (none of which are the fault of Infinite Mac’s developer) to play it:

Ecotoons (Video, 1993)

You can watch this VHS tape of thirty ecology-themed short animated films here.

Unseen Worlds (Video, 1990)

You can watch it here.