What’s up, Tachyon engine will no more be a sprite based engine, nor a pen based, infact it will be both. The new concept will incorporate a hybrid of pen and sprites into an engine D7 has never seen before [Sprites + Stamps + Pen] Essentially
The stamp and pen has a drawback, that only being it must be in turbo warp to not look pixelated but it can be on scratch if you replace the stamps with sprites (The background is the new engine in progress, but the official demo wont be released soon, rather a vertical slice)