2 players simultaneous

Games that offer a 2 players simultaneous mode can support two players onscreen at the same time. There are several Vectrex games that have this option. With the Vectropolis 500 demo included on the Vectopia cartridge there is even a playable demo that allows four players to play simultaneously. 

There are games where the players play against each other as well as those where the players play cooperatively against the Vectrex AI. Cooperative games usually show separate scores for each human player so within a co-op game players can compete with each other for the highest scoring.

The Vectorzoa game Star Sling offers both a two player versus as well as a cooperative mode.

List of Vectrex games that allow simultaneous multiplayer:

Original games "Player versus Player"

• Blitz!
• Heads Up / Soccer Football
• Space Wars

Homebrew games "Player versus Player":

• Death Chase
• Disc Duel Demo (Vecmania)
• Nebula Commander
• NOX
• Pitcher's Duel
• Revector
• Skull Soccer (Deathchase bonus game)
• Solar Wars 2Player Preview
• Space Race (Galaxy Wars & Space Launcher)
• Star Sling
• Sub Wars
• Sundance
• Vec Sports Boxing
• Vector Pong
• Vectropolis 500 demo (Vectopia , 4 players)
• V-Hockey
• Warrior
• Whack-a-mole
• ZUFALLSTREFFER

Original games "Cooperative"

• Armor Attack
• Rip Off
• Star Castle
• Star Hawk

 Homebrew games "Cooperative"

• Debris
• Star Sling