Ubisoft's share price has plummeted following the delay of Watch Dogs and news that Splinter Cell: Blacklist and Rayman: Legends have both underperformed.

The Paris-based company closed yesterday at €11.09 and opened today at €8.01 before climbing to €8.19 at the time of writing – a drop of more than 26 per cent.

Yesterday the company announced that highly-anticipated open world title Watch Dogs and team racer The Crew had both been delayed until next year.

Ubisoft then revised its revenue projections for this fiscal year downward by several hundred million Euros: from €1.45 billion (NZ$2.33b) to €1.045 billion (NZ$1.68b).

"We have experienced lower sales than we anticipated when we gave our targets," said Ubisoft exec Alain Martinez.

“Watch Dogs was trending towards the higher part of our guidance because the pre-orders were very good. We had more units than we had on the original plan,” he said.

Rayman Legends launched to glowing reviews and higher sales than predecessor Rayman Origins, but Ubisoft said that Legends and Blacklist sales had suffered due to the impending launch of the Xbox One and PlayStation 4.

However, CEO Yves Guillemot said Ubisoft expects Watch Dogs to be a blockbuster series.

"In a world of mega-blockbusters we have come to the conclusion that the team needed more time to realise the game's potential," he said.

"We consider it to be a long term pillar of our future performance, alongside the likes of Assassin's Creed and Far Cry."