tgeorgemihai This method 2 doesn't provide benefits for memory usage, Ashley gave us an excuse to use letterbox integer scale.
Tilemap is awesome solution for big games, but C2 renderer for tilemap is unprofessional however is not impossible to fix seam.
Another framework for HTML5 game is called Phaser provides seamless using tilemap in fullscreen.
It's really nice for clean and seamless.
http://gametest.mobi/mariocombo/
Tilesets are 16x16
Ashley claimed that it doesn't use floating point scaling, nothing else anyway he won't explain more details to fix seam, more like he's giving up. We are not happy with seam. I wouldn't use integer letterbox scale, most game publishers DON'T LIKE small window or impossible to upscale, not cool Ashley.