is the latest Space Invaders remake by BGames, developer of the Lethal Judgment series among other releases. Could possibly be the best one yet, with graphics to match even commercial titles. Yet the gameplay balance is severely lacking. Power-ups tend to get mixed up with enemy shots too often, plus collision with other objects are not properly relayed to the player.
Difficulty aside, anyone willing to give it a go won't be disappointed with the amount of content in this game. Unfortunately patience is a pricey commodity even for a quality freeware such as this.