February's free NES and SNES games for Nintendo Switch Online subscribers are live. Four more retro titles have been added to the online service--two from each classic system.

The new NES games this month are Shadow of the Ninja and Eliminator Boat Duel. The former is a cooperative side-scrolling action game in the vein of Ninja Gaiden, while the latter is a top-down racing game that has players piloting high-speed powerboats.

The two new SNES titles, meanwhile, are the cute-but-frenetic top-down shooter Pop'n TwinBee and the sports game Smash Tennis. What makes these titles particularly notable is that neither has previously received a US release. You can take a look at the four new Switch Online games below.

On 2/19, 4 more games will be added to the #NES & #SNES – #NintendoSwitchOnline collections!

Super NES – Nintendo Switch Online:

・Pop'n TwinBee

・Smash Tennis

NES – Nintendo Switch Online:

・Shadow of the Ninja

・Eliminator Boat Duel pic.twitter.com/Ot2dMp6t0I — Nintendo of America (@NintendoAmerica) February 12, 2020

With these additions, there are now 52 NES games and 26 SNES games in the Switch Online library. In the past, new titles were added to the service on a monthly basis, but they are now being released intermittently. The last batch arrived in December and featured six games, including Super Punch-Out, Star Fox 2, and Breath of Fire II.

The retro titles can be accessed from the free NES and SNES apps, which are available exclusively for Nintendo Switch Online members. Subscriptions to the service cost $4 for one month, $8 for three months, and $20 for one year. Nintendo also offers a $35 annual Family Plan that covers up to eight different Nintendo Accounts across multiple systems.

Another exclusive offer for Switch Online subscribers is the Switch SNES controller, which is now back in stock on Nintendo's website. The controllers cost $30 each and can be used to play Switch Online's SNES games, but you can only purchase one if you're a Switch Online member.