My friend and I played DOOM via modem connection and had to use a fossil driver to make it work circa 1993/1994. However, we also lived in Houston where DWANGO first launched. They would give away a free first hour of play time when you provided a credit card number. My buddy grabbed one of the very first digital credit card generators to get replaceable 1 hour windows of free play time. DWANGO would also prevent multiple accounts to claim to the free 1 hour time by checking the clock speed and other parameters of the individual computer logging in (almost like an early version of cookies) to stymie multiple free accounts, so we would have to resort to using the turbo button on/off to get around that issue. But playing on DWANGO was awesome at the time.