For a good experience may I suggest one of these adapters [1], a genuine NES controller [2], a good NES emulator for your platform, the original Tetris NES ROM, a PC that plugs into a TV, and a TV that has "game mode" to minimise latency (critical for any serious Tetrissing).
[1] http://ebay.co.uk/itm/202526513876
[2] https://www.ebay.co.uk/sch/i.html?_from=R40&_nkw=nes+control...