Square Enix today announced that Space Invaders Extreme for the Nintendo DS and PSP and Arkanoid DS will be available across Europe in Summer 2008. Space Invaders Extreme features an immersive sound scheme where sound effects are synchronised to match the beats of the music, as well as a new range of power-ups. The PSP version features ad-hoc multiplayer, while the Nintendo DS version allows multiplayer games over the Nintendo Wi-Fi Connection. Check the press release for more details.