The earliest known attempt to release an OVA involved Osamu Tezuka's The Green Cat (part of the Lion Books series) in 1983, although it cannot count as the first OVA: there is no evidence that the VHS tape became available immediately and the series remained incomplete. Therefore, the first official OVA release to be billed as such was 1983's Dallos, directed by Mamoru Oshii and released by Bandai. Other famous early OVAs, premièring shortly thereafter, were Fight! Iczer One and the original Megazone 23. Other companies were quick to pick up on the idea, and the mid-to-late 1980s saw the market flooded with OVAs. During this time, most OVA series were new, stand-alone titles.
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