What should I play next? [no GA inside]

i think even the ep1 by itself is enjoyable, the problem is that its very short and when you get the rest you may not remember the story

As said above, you could play it as a sample and really enjoy it, but I recomend to do that just before buying the rest. You can easily play through one episode in about 2 hours, so if you see a sale just play it and get the rest if you like it.

you can - ep1 is still great (not so great as further ones but still good enough), but the thing is that you will wish to play ep2 straight away ;) Also your choices, even small ones change a lot of small things in later episodes, so if it wi;ll be long time before you buy later eps you may forget it and lose some cool experiences. I'd suggest waiting for game to go on sale somewhere, then playing ep1 as a sample so if you like it you can buy later eps straight away cheaply :>

Try to sit down and do it in one or maybe two sessions of play. It's really not that long and the puzzles are pretty good too. You'll love it ^^