No, don't worry. Game's not dead, just took a big break because I couldn't think of some puzzles is all.
So! Here are the currently implemented puzzles in new Eientei! No screenshots sadly this time...
Battle Room: 10 chests, all with random encounters (up to 10 sets of encounters per chest). The key is in one of these chests, and once the key is obtained, then the chests will stop giving enemies. However, if the player leaves the room without the key and comes back, all chests will respawn with different encounters, and the key will move to a completely different chest.
Hidden Passageway Room: Invisible maze, so to speak. You have to activate a switch at the start of the room, which gives 30 seconds (time pending as I haven't tested any of these rooms yet) for you to get to where the key is and pick it up. Otherwise, you have to reset the timer and try again. Nothing too difficult as there's nothing in the way.
Moving Floor Room: Based on Final Fantasy V's Desert of Shifting Sand area. Basically, you walk on a tile, and it'll move you in the direction it's facing. Have to get to the center area where the key is, but there's also a couple treasure chests strewn about in the area.
Sound Puzzle: Listen to a set of 5 sounds and play them back by finding the appropriate sound player and playing them in the correct order. Five levels, with level 1/2 giving 2 seconds between each note, level 3/4 giving 1 second, and level 5 giving half a second (times pending).
Now, the final room is what's kept me from finishing the new Eientei, as I've been trying to come up with an idea for a while now (a good half a week to week actually). I MAY have one though, based on Paper Mario, where you enter the room and pick up the key, but the door locks on you. You have to either:
A) Put the key back to open the door. Obviously not the right solution as you need the key, or
B) Give up items to open the door.
Basically, there's 3 pillars, and each will ask you to give up specific items and in specific amounts. For instance, the first pillar would ask something like "Sacrifice P x25/Lapis x10/Potion Berry x3/F x1?", then you choose whichever one you want to do and it'll remove that amount from your inventory. If the player doesn't have enough of any given items asked, they can pick up the items they already put down, put the key back, and then leave the room to get the required items. Once the player leaves the room with the key, they can never go back into the room to reclaim the items.
So yeah! That's how new Eientei is looking thus far! What do you guys think of the final puzzle? It's not much of a puzzle but...^^;;