Online charity lottery monday begins a low-key advertising campaign this week following a relaunch of the game.
Organiser Chariot said the new-look lottery is to be advertised entirely online, but declined to say how much the campaign will cost.
The relaunched lottery features a £1m prize promotion, which players who enter all five of monday's weekly charity draws are eligible to win.
Stuart Handley, communications director at Chariot, said sales in the first week had been encouraging, but would not say how many tickets had been sold.
Chariot's share price remained at 2.75p as the second draw of the relaunched game approached. Shares in Chariot reached a high of £2.13 in April, before monday's launch.
Monday launched in May with an £8m advertising campaign and a promise to donate 30p per £1 ticket sold to its 70 charity partners. It swiftly ran into trouble, however, following technical hitches and poor ticket sales. Chariot relaunched the lottery with a new promotional draw two weeks ago, after renegotiating deals with charity partners and promising investors a more streamlined business model.