April's free NES games for Nintendo Switch Online subscribers are now available. While the selection of titles in recent months has varied between Japan and the West, this month's lineup is the same across all regions and includes the classic boxing game Punch-Out, the shoot-'em-up Star Soldier, and the notoriously difficult Super Mario Bros.: The Lost Levels.

In addition to those three games, Nintendo has added a special save state of one of last month's titles, Kid Icarus, to the NES library. This version starts players off in the final level before the climactic confrontation with Medusa, with all three Sacred Treasures already equipped. You can watch a trailer for this month's NES lineup below.

The NES library is one of the perks Switch owners receive for subscribing to the Nintendo Switch Online service, offering unlimited access to more than 30 NES games with added online multiplayer support for as long as you have an active membership. Nintendo adds new games to the catalog every month; March brought Kid Icarus and StarTropics, while Kirby's Adventure and Super Mario Bros. 2 were added in February.

Nintendo Switch Online subscriptions run for US $4 / £3.49 / AU $6 for one month, US $8 / £7 / AU $12 for three months, and US $20 / £18 / AU $30 for one year. Nintendo also offers a Family Membership that can encompass up to eight Nintendo Accounts for US $35 / £31.49 / AU $55. Other benefits for subscribing include the ability to play Switch games online, cloud save data backup for most games, and exclusive offers such as Tetris 99, which is free to download for NSO members.