Make two versions...the original one (with the sprites updated) for the small kids and some kind of a "redux" version with an increasing level of difficulty, the longer you manage to stay alive. For the big kids (like me) that would be. =D
Well...if it is worth the effort for you. Personally, I believe it would be worth it. The overall design has something special (at least for me) , everything...well I cant find words for that, it just feels better, more complete than the usual SEUCK shooter....
Viewing post in Keiko's Adventure (C64) comments
I may only do an update to the Sprites for the Harder/Adult Version then again i might not, I will also have to cut down the play area screen size so the top and bottom are not playable so i can tighten up the attack waves to help make it harder, If you look at some of my other games you will see i don't use the whole playable screen, the whole screen is 5 blocks high but to make games harder/tighter i use only 3 blocks that way attacks waves are closer and more of a problem for the Player.