Ezone Crash Bandicoot games

Some time in the late 90's during the development of the original Crash trilogy, game developer Ezone was commissioned to make some Crash games for the PC. There are four in total, though one is currently lost. It is unknown when exactly these were released, though the use of music and renders from Crash Bandicoot 2: Cortex Strikes Back implies some time in 1997 at the earliest.

While the games are no longer being distributed by Ezone themselves, three out of four of them can currently be downloaded here.

Crash Ball
Crash Ball is a simple Pong clone, featuring Crash playing against Cortex in a tennis match, using a Wumpa Fruit as a ball. The player plays as Crash and must score 10 times to win.

Crash Invaders
Crash Invaders is a Space Invaders clone, featuring Crash firing lasers at Vultures that move side to side at the top of the screen, sometimes firing back. Occasionally Cortex will fly by on his hoverboard at the top of the screen, granting a large point bonus if he is shot. The player begins with 2 lives, losing a life if Crash is shot. The aim of the game is to defeat all of the vultures before running out of lives.

CrashOut
CrashOut is a Breakout clone. The player controls Crash at the bottom of the screen, using him as a paddle to deflect a bouncing Wumpa Fruit to hit and destroy purple bricks with Cortex's face on them. 50 points are awarded for hitting a brick from underneath, while 100 are given for hitting from above. There are three levels in total, with the number of rows of bricks corresponding to the level number. The player has 3 lives. Missing the Wumpa Fruit will deduct a life, and losing all lives sends you back to the beginning.

Trivia

 * These games are the first Crash games to be made by a studio other than Naughty Dog, pre-dating Crash Bandicoot (99X) by a year. They are also the first Crash games released on PC.